28906497536 has 80 divisors (see below), whose sum is σ = 69890410656. Its totient is φ = 11659739136.

The previous prime is 28906497517. The next prime is 28906497551. The reversal of 28906497536 is 63579460982.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 176291 + ... + 298146.

Almost surely, 2^28906497536 is an apocalyptic number.

It is an amenable number.

28906497536 is an abundant number, since it is smaller than the sum of its proper divisors (40983913120).

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

28906497536 is an equidigital number, since it uses as much as digits as its factorization.

28906497536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 474479 (or 474463 counting only the distinct ones).

The product of its (nonzero) digits is 19595520, while the sum is 59.

The spelling of 28906497536 in words is "twenty-eight billion, nine hundred six million, four hundred ninety-seven thousand, five hundred thirty-six".