22831728 has 40 divisors (see below), whose sum is σ = 59448576. Its totient is φ = 7550400.

The previous prime is 22831727. The next prime is 22831733. The reversal of 22831728 is 82713822.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22831727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4473 + ... + 8103.

Almost surely, 2^22831728 is an apocalyptic number.

It is an amenable number.

22831728 is an abundant number, since it is smaller than the sum of its proper divisors (36616848).

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

22831728 is a wasteful number, since it uses less digits than its factorization.

22831728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3773 (or 3767 counting only the distinct ones).

The product of its digits is 10752, while the sum is 33.

The square root of 22831728 is about 4778.2557487016. The cubic root of 22831728 is about 283.6914588747.

The spelling of 22831728 in words is "twenty-two million, eight hundred thirty-one thousand, seven hundred twenty-eight".