921884712 has 256 divisors, whose sum is σ = 2999808000. Its totient is φ = 229920768.

The previous prime is 921884707. The next prime is 921884759. The reversal of 921884712 is 217488129.

921884712 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2128848 + ... + 2129280.

It is an arithmetic number, because the mean of its divisors is an integer number (11718000).

Almost surely, 2^921884712 is an apocalyptic number.

921884712 is a gapful number since it is divisible by the number (92) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 921884712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1499904000).

921884712 is an abundant number, since it is smaller than the sum of its proper divisors (2077923288).

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

921884712 is a wasteful number, since it uses less digits than its factorization.

921884712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 520 (or 516 counting only the distinct ones).

The product of its digits is 64512, while the sum is 42.

The square root of 921884712 is about 30362.5544379915. The cubic root of 921884712 is about 973.2525216992.

The spelling of 921884712 in words is "nine hundred twenty-one million, eight hundred eighty-four thousand, seven hundred twelve".