921884272 has 10 divisors (see below), whose sum is σ = 1786150808. Its totient is φ = 460942128.

The previous prime is 921884261. The next prime is 921884291. The reversal of 921884272 is 272488129.

It is a super-2 number, since 2×921884272² = 1699741221921939968, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28808868 + ... + 28808899.

Almost surely, 2^921884272 is an apocalyptic number.

It is an amenable number.

921884272 is a deficient number, since it is larger than the sum of its proper divisors (864266536).

921884272 is a wasteful number, since it uses less digits than its factorization.

921884272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57617775 (or 57617769 counting only the distinct ones).

The product of its digits is 129024, while the sum is 43.

The square root of 921884272 is about 30362.5471922235. The cubic root of 921884272 is about 973.2523668602.

The spelling of 921884272 in words is "nine hundred twenty-one million, eight hundred eighty-four thousand, two hundred seventy-two".