28808729292 has 48 divisors (see below), whose sum is σ = 77748878592. Its totient is φ = 8131894080.

The previous prime is 28808729251. The next prime is 28808729297. The reversal of 28808729292 is 29292780882.

It is not an unprimeable number, because it can be changed into a prime (28808729297) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2059059 + ... + 2073002.

It is an arithmetic number, because the mean of its divisors is an integer number (1619768304).

Almost surely, 2^28808729292 is an apocalyptic number.

It is an amenable number.

28808729292 is an abundant number, since it is smaller than the sum of its proper divisors (48940149300).

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

28808729292 is a wasteful number, since it uses less digits than its factorization.

28808729292 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4132158 (or 4132156 counting only the distinct ones).

The product of its (nonzero) digits is 4644864, while the sum is 57.

The spelling of 28808729292 in words is "twenty-eight billion, eight hundred eight million, seven hundred twenty-nine thousand, two hundred ninety-two".