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28962194920 = 2351787405179
BaseRepresentation
bin11010111110010010…
…000000010111101000
32202202102110221102221
4122332102000113220
5433303310214140
621145520203424
72043465411031
oct327622002750
982672427387
1028962194920
111131244978a
125743469574
13296737c459
14158a699a88
15b4797b14a
hex6be4805e8

28962194920 has 32 divisors (see below), whose sum is σ = 65201565600. Its totient is φ = 11578366528.

The previous prime is 28962194917. The next prime is 28962194957. The reversal of 28962194920 is 2949126982.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 131110 + ... + 274069.

It is an arithmetic number, because the mean of its divisors is an integer number (2037548925).

Almost surely, 228962194920 is an apocalyptic number.

28962194920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28962194920 is an abundant number, since it is smaller than the sum of its proper divisors (36239370680).

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

28962194920 is a wasteful number, since it uses less digits than its factorization.

28962194920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406977 (or 406973 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 52.

The spelling of 28962194920 in words is "twenty-eight billion, nine hundred sixty-two million, one hundred ninety-four thousand, nine hundred twenty".

Divisors: 1 2 4 5 8 10 20 40 1787 3574 7148 8935 14296 17870 35740 71480 405179 810358 1620716 2025895 3241432 4051790 8103580 16207160 724054873 1448109746 2896219492 3620274365 5792438984 7240548730 14481097460 28962194920