921052992 has 112 divisors (see below), whose sum is σ = 2552639040. Its totient is φ = 292712448.

The previous prime is 921052981. The next prime is 921052999. The reversal of 921052992 is 299250129.

It is a super-2 number, since 2×921052992² = 1696677228144304128, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 921052992.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (921052999) 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, 461148 + ... + 463140.

It is an arithmetic number, because the mean of its divisors is an integer number (22791420).

Almost surely, 2^921052992 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 921052992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1276319520).

921052992 is an abundant number, since it is smaller than the sum of its proper divisors (1631586048).

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

921052992 is a wasteful number, since it uses less digits than its factorization.

921052992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2120 (or 2110 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 39.

The square root of 921052992 is about 30348.8548713127. The cubic root of 921052992 is about 972.9597457034.

The spelling of 921052992 in words is "nine hundred twenty-one million, fifty-two thousand, nine hundred ninety-two".