49221128 has 32 divisors (see below), whose sum is σ = 101057760. Its totient is φ = 22289280.

The previous prime is 49221113. The next prime is 49221157. The reversal of 49221128 is 82112294.

It is a self number, because there is not a number n which added to its sum of digits gives 49221128.

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, 26651 + ... + 28437.

It is an arithmetic number, because the mean of its divisors is an integer number (3158055).

Almost surely, 2^49221128 is an apocalyptic number.

It is an amenable number.

49221128 is an abundant number, since it is smaller than the sum of its proper divisors (51836632).

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

49221128 is a wasteful number, since it uses less digits than its factorization.

49221128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2117 (or 2113 counting only the distinct ones).

The product of its digits is 2304, while the sum is 29.

The square root of 49221128 is about 7015.7770774163. Note that the first 3 decimals coincide. The cubic root of 49221128 is about 366.4802041835.

The spelling of 49221128 in words is "forty-nine million, two hundred twenty-one thousand, one hundred twenty-eight".