28909042092 has 72 divisors (see below), whose sum is σ = 83535597600. Its totient is φ = 8257690368.

The previous prime is 28909042081. The next prime is 28909042111. The reversal of 28909042092 is 29024090982.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1225384 + ... + 1248752.

Almost surely, 2^28909042092 is an apocalyptic number.

It is an amenable number.

28909042092 is an abundant number, since it is smaller than the sum of its proper divisors (54626555508).

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

28909042092 is a wasteful number, since it uses less digits than its factorization.

28909042092 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28295 (or 28290 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The spelling of 28909042092 in words is "twenty-eight billion, nine hundred nine million, forty-two thousand, ninety-two".