28957993008 has 80 divisors (see below), whose sum is σ = 85740345600. Its totient is φ = 8249971968.

The previous prime is 28957992961. The next prime is 28957993013. The reversal of 28957993008 is 80039975982.

It is a hoax number, since the sum of its digits (60) coincides with the sum of the digits of its distinct 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 15 ways as a sum of consecutive naturals, for example, 6210 + ... + 240737.

It is an arithmetic number, because the mean of its divisors is an integer number (1071754320).

Almost surely, 2^28957993008 is an apocalyptic number.

28957993008 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28957993008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42870172800).

28957993008 is an abundant number, since it is smaller than the sum of its proper divisors (56782352592).

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

28957993008 is a wasteful number, since it uses less digits than its factorization.

28957993008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247314 (or 247308 counting only the distinct ones).

The product of its (nonzero) digits is 9797760, while the sum is 60.

The spelling of 28957993008 in words is "twenty-eight billion, nine hundred fifty-seven million, nine hundred ninety-three thousand, eight".