28418739990 has 32 divisors (see below), whose sum is σ = 69791141376. Its totient is φ = 7402090080.

The previous prime is 28418739977. The next prime is 28418740001. The reversal of 28418739990 is 9993781482.

It is a congruent number.

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, 11013726 + ... + 11016305.

It is an arithmetic number, because the mean of its divisors is an integer number (2180973168).

Almost surely, 2^28418739990 is an apocalyptic number.

28418739990 is an abundant number, since it is smaller than the sum of its proper divisors (41372401386).

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

28418739990 is a wasteful number, since it uses less digits than its factorization.

28418739990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22030084.

The product of its (nonzero) digits is 7838208, while the sum is 60.

The spelling of 28418739990 in words is "twenty-eight billion, four hundred eighteen million, seven hundred thirty-nine thousand, nine hundred ninety".