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28834357960 = 2351131763697
BaseRepresentation
bin11010110110101010…
…010110001011001000
32202102111221011002201
4122312222112023020
5433023043423320
621125112205544
72040353666362
oct326652261310
982374834081
1028834357960
1111257274a01
1257086998b4
132946a40395
1415776ddd32
15b3b62870a
hex6b6a962c8

28834357960 has 32 divisors (see below), whose sum is σ = 64884056760. Its totient is φ = 11532542976.

The previous prime is 28834357957. The next prime is 28834358017. The reversal of 28834357960 is 6975343882.

It can be written as a sum of positive squares in 4 ways, for example, as 23502729636 + 5331628324 = 153306^2 + 73018^2 .

It is a Smith number, since the sum of its digits (55) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 420832 + ... + 484528.

Almost surely, 228834357960 is an apocalyptic number.

28834357960 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28834357960 is an abundant number, since it is smaller than the sum of its proper divisors (36049698800).

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

28834357960 is a wasteful number, since it uses less digits than its factorization.

28834357960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75025 (or 75021 counting only the distinct ones).

The product of its (nonzero) digits is 8709120, while the sum is 55.

The spelling of 28834357960 in words is "twenty-eight billion, eight hundred thirty-four million, three hundred fifty-seven thousand, nine hundred sixty".

Divisors: 1 2 4 5 8 10 20 40 11317 22634 45268 56585 63697 90536 113170 127394 226340 254788 318485 452680 509576 636970 1273940 2547880 720858949 1441717898 2883435796 3604294745 5766871592 7208589490 14417178980 28834357960