28904325120 has 714 divisors, whose sum is σ = 114321961194. Its totient is φ = 7007109120.

The previous prime is 28904325113. The next prime is 28904325167. The reversal of 28904325120 is 2152340982.

It is a happy number.

28904325120 is a `hidden beast` number, since 28 + 90 + 4 + 32 + 512 + 0 = 666.

It can be written as a sum of positive squares in only one way, i.e., 23123460096 + 5780865024 = 152064^2 + 76032^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 41 ways as a sum of consecutive naturals, for example, 2627665915 + ... + 2627665925.

Almost surely, 2^28904325120 is an apocalyptic number.

28904325120 is a gapful number since it is divisible by the number (20) 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 28904325120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57160980597).

28904325120 is an abundant number, since it is smaller than the sum of its proper divisors (85417636074).

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

28904325120 is an frugal number, since it uses more digits than its factorization.

28904325120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77 (or 21 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The spelling of 28904325120 in words is "twenty-eight billion, nine hundred four million, three hundred twenty-five thousand, one hundred twenty".