921534080 has 64 divisors (see below), whose sum is σ = 2236027680. Its totient is φ = 363095040.

The previous prime is 921534071. The next prime is 921534083. The reversal of 921534080 is 80435129.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (32).

It is not an unprimeable number, because it can be changed into a prime (921534083) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 32135 + ... + 53625.

Almost surely, 2^921534080 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 921534080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1118013840).

921534080 is an abundant number, since it is smaller than the sum of its proper divisors (1314493600).

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

921534080 is a wasteful number, since it uses less digits than its factorization.

921534080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21577 (or 21565 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 921534080 is about 30356.7798028711. The cubic root of 921534080 is about 973.1291162642.

The spelling of 921534080 in words is "nine hundred twenty-one million, five hundred thirty-four thousand, eighty".