921927168 has 120 divisors (see below), whose sum is σ = 2752893000. Its totient is φ = 296669184.

The previous prime is 921927151. The next prime is 921927173. The reversal of 921927168 is 861729129.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 130183 + ... + 137081.

It is an arithmetic number, because the mean of its divisors is an integer number (22940775).

Almost surely, 2^921927168 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 921927168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1376446500).

921927168 is an abundant number, since it is smaller than the sum of its proper divisors (1830965832).

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

921927168 is a wasteful number, since it uses less digits than its factorization.

921927168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6952 (or 6933 counting only the distinct ones).

The product of its digits is 108864, while the sum is 45.

The square root of 921927168 is about 30363.2535806030. The cubic root of 921927168 is about 973.2674620254.

The spelling of 921927168 in words is "nine hundred twenty-one million, nine hundred twenty-seven thousand, one hundred sixty-eight".