28730913132 has 54 divisors (see below), whose sum is σ = 67673596228. Its totient is φ = 9487133728.

The previous prime is 28730913097. The next prime is 28730913193. The reversal of 28730913132 is 23131903782.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 98057578 + ... + 98057870.

Almost surely, 2^28730913132 is an apocalyptic number.

It is an amenable number.

28730913132 is an abundant number, since it is smaller than the sum of its proper divisors (38942683096).

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

28730913132 is an equidigital number, since it uses as much as digits as its factorization.

28730913132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 927 (or 465 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 39.

The spelling of 28730913132 in words is "twenty-eight billion, seven hundred thirty million, nine hundred thirteen thousand, one hundred thirty-two".