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1301282940 = 223521688049
BaseRepresentation
bin100110110010000…
…0000000001111100
310100200121000121110
41031210000001330
510131112023230
6333043002020
744150502546
oct11544000174
93320530543
101301282940
116085a4151
12303969310
13179796c09
14c4b76696
15793954b0
hex4d90007c

1301282940 has 24 divisors (see below), whose sum is σ = 3643592400. Its totient is φ = 347008768.

The previous prime is 1301282921. The next prime is 1301282951. The reversal of 1301282940 is 492821031.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 1301282898 and 1301282907.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10843965 + ... + 10844084.

It is an arithmetic number, because the mean of its divisors is an integer number (151816350).

Almost surely, 21301282940 is an apocalyptic number.

1301282940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1301282940 is an abundant number, since it is smaller than the sum of its proper divisors (2342309460).

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

1301282940 is a wasteful number, since it uses less digits than its factorization.

1301282940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21688061 (or 21688059 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 1301282940 is about 36073.2995441227. The cubic root of 1301282940 is about 1091.7517885053.

The spelling of 1301282940 in words is "one billion, three hundred one million, two hundred eighty-two thousand, nine hundred forty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 21688049 43376098 65064147 86752196 108440245 130128294 216880490 260256588 325320735 433760980 650641470 1301282940