921140528 has 40 divisors (see below), whose sum is σ = 2225095680. Its totient is φ = 358885440.

The previous prime is 921140513. The next prime is 921140531. The reversal of 921140528 is 825041129.

It is a junction number, because it is equal to n+sod(n) for n = 921140494 and 921140503.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 372608 + ... + 375071.

It is an arithmetic number, because the mean of its divisors is an integer number (55627392).

Almost surely, 2^921140528 is an apocalyptic number.

It is an amenable number.

921140528 is an abundant number, since it is smaller than the sum of its proper divisors (1303955152).

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

921140528 is a wasteful number, since it uses less digits than its factorization.

921140528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 747705 (or 747699 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 32.

The square root of 921140528 is about 30350.2970001942. The cubic root of 921140528 is about 972.9905677831.

The spelling of 921140528 in words is "nine hundred twenty-one million, one hundred forty thousand, five hundred twenty-eight".