28107902534400 has 3024 divisors, whose sum is σ = 117282323450880. Its totient is φ = 6621718118400.

The previous prime is 28107902534399. The next prime is 28107902534417. The reversal of 28107902534400 is 443520970182.

28107902534400 is a `hidden beast` number, since 2 + 8 + 1 + 0 + 79 + 0 + 2 + 534 + 40 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 335 ways as a sum of consecutive naturals, for example, 221322067137 + ... + 221322067263.

It is an arithmetic number, because the mean of its divisors is an integer number (38783837120).

Almost surely, 2^{28107902534400} is an apocalyptic number.

28107902534400 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 28107902534400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58641161725440).

28107902534400 is an abundant number, since it is smaller than the sum of its proper divisors (89174420916480).

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

28107902534400 is a wasteful number, since it uses less digits than its factorization.

28107902534400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314 (or 280 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The spelling of 28107902534400 in words is "twenty-eight trillion, one hundred seven billion, nine hundred two million, five hundred thirty-four thousand, four hundred".