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1020135424 = 2117116469
BaseRepresentation
bin111100110011100…
…000100000000000
32122002120020201111
4330303200200000
54042123313144
6245121013104
734165002520
oct7463404000
92562506644
101020135424
11483926930
12245784194
1313346a139
14996ad680
155e85c534
hex3cce0800

1020135424 has 96 divisors (see below), whose sum is σ = 2543486400. Its totient is φ = 397393920.

The previous prime is 1020135421. The next prime is 1020135427. The reversal of 1020135424 is 4245310201.

It is an interprime number because it is at equal distance from previous prime (1020135421) and next prime (1020135427).

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 1020135395 and 1020135404.

It is not an unprimeable number, because it can be changed into a prime (1020135421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 154462 + ... + 160930.

It is an arithmetic number, because the mean of its divisors is an integer number (26494650).

Almost surely, 21020135424 is an apocalyptic number.

1020135424 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1020135424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1271743200).

1020135424 is an abundant number, since it is smaller than the sum of its proper divisors (1523350976).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1020135424 is an equidigital number, since it uses as much as digits as its factorization.

1020135424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6509 (or 6489 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 1020135424 is about 31939.5589199350. The cubic root of 1020135424 is about 1006.6672568938.

Adding to 1020135424 its reverse (4245310201), we get a palindrome (5265445625).

The spelling of 1020135424 in words is "one billion, twenty million, one hundred thirty-five thousand, four hundred twenty-four".

Divisors: 1 2 4 7 8 11 14 16 22 28 32 44 56 64 77 88 112 128 154 176 224 256 308 352 448 512 616 704 896 1024 1232 1408 1792 2048 2464 2816 3584 4928 5632 6469 7168 9856 11264 12938 14336 19712 22528 25876 39424 45283 51752 71159 78848 90566 103504 142318 157696 181132 207008 284636 362264 414016 498113 569272 724528 828032 996226 1138544 1449056 1656064 1992452 2277088 2898112 3312128 3984904 4554176 5796224 6624256 7969808 9108352 11592448 13248512 15939616 18216704 23184896 31879232 36433408 46369792 63758464 72866816 92739584 127516928 145733632 255033856 510067712 1020135424