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28392830976 = 2113172353223
BaseRepresentation
bin11010011100010110…
…000011100000000000
32201021202010020221110
4122130112003200000
5431122031042401
621013220523320
72023413036606
oct323426034000
981252106843
1028392830976
1111050016174
125604850540
1328a641c203
141534c09876
15b129b09d6
hex69c583800

28392830976 has 384 divisors, whose sum is σ = 85593231360. Its totient is φ = 8322023424.

The previous prime is 28392830929. The next prime is 28392831011. The reversal of 28392830976 is 67903829382.

It is a tau number, because it is divible by the number of its divisors (384).

It is a super-2 number, since 2×283928309762 (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 127322001 + ... + 127322223.

It is an arithmetic number, because the mean of its divisors is an integer number (222899040).

Almost surely, 228392830976 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28392830976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42796615680).

28392830976 is an abundant number, since it is smaller than the sum of its proper divisors (57200400384).

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

28392830976 is a wasteful number, since it uses less digits than its factorization.

28392830976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341 (or 321 counting only the distinct ones).

The product of its (nonzero) digits is 7838208, while the sum is 57.

The spelling of 28392830976 in words is "twenty-eight billion, three hundred ninety-two million, eight hundred thirty thousand, nine hundred seventy-six".