28007293797090 has 32 divisors (see below), whose sum is σ = 74686116792960. Its totient is φ = 7468611679152.

The previous prime is 28007293797083. The next prime is 28007293797113. The reversal of 28007293797090 is 9079739270082.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51865358614 + ... + 51865359153.

It is an arithmetic number, because the mean of its divisors is an integer number (2333941149780).

Almost surely, 2^{28007293797090} is an apocalyptic number.

28007293797090 is an abundant number, since it is smaller than the sum of its proper divisors (46678822995870).

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

28007293797090 is a wasteful number, since it uses less digits than its factorization.

28007293797090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103730717783 (or 103730717777 counting only the distinct ones).

The product of its (nonzero) digits is 24004512, while the sum is 63.

The spelling of 28007293797090 in words is "twenty-eight trillion, seven billion, two hundred ninety-three million, seven hundred ninety-seven thousand, ninety".