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1024222420 = 2251314332749
BaseRepresentation
bin111101000011000…
…110010011010100
32122101020220000201
4331003012103110
54044200104140
6245344350244
734244514124
oct7503062324
92571226021
101024222420
11486168511
12247015384
1313426b490
149a054c84
155edb849a
hex3d0c64d4

1024222420 has 48 divisors (see below), whose sum is σ = 2318778000. Its totient is φ = 377773056.

The previous prime is 1024222387. The next prime is 1024222429. The reversal of 1024222420 is 242224201.

It can be written as a sum of positive squares in 8 ways, for example, as 91164304 + 933058116 = 9548^2 + 30546^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1024222429) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 371206 + ... + 373954.

It is an arithmetic number, because the mean of its divisors is an integer number (48307875).

Almost surely, 21024222420 is an apocalyptic number.

1024222420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1024222420 is an abundant number, since it is smaller than the sum of its proper divisors (1294555580).

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

1024222420 is a wasteful number, since it uses less digits than its factorization.

1024222420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4204 (or 4202 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 1024222420 is about 32003.4751238049. The cubic root of 1024222420 is about 1008.0098116224.

Adding to 1024222420 its reverse (242224201), we get a palindrome (1266446621).

The spelling of 1024222420 in words is "one billion, twenty-four million, two hundred twenty-two thousand, four hundred twenty".

Divisors: 1 2 4 5 10 13 20 26 52 65 130 260 1433 2749 2866 5498 5732 7165 10996 13745 14330 18629 27490 28660 35737 37258 54980 71474 74516 93145 142948 178685 186290 357370 372580 714740 3939317 7878634 15757268 19696585 39393170 51211121 78786340 102422242 204844484 256055605 512111210 1024222420