921198080 has 80 divisors (see below), whose sum is σ = 2409582384. Its totient is φ = 334970880.

The previous prime is 921198037. The next prime is 921198101. The reversal of 921198080 is 80891129.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11804 + ... + 44516.

Almost surely, 2^921198080 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 921198080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1204791192).

921198080 is an abundant number, since it is smaller than the sum of its proper divisors (1488384304).

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

921198080 is a wasteful number, since it uses less digits than its factorization.

921198080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32747 (or 32731 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 38.

The square root of 921198080 is about 30351.2451144924. The cubic root of 921198080 is about 973.0108312085.

The spelling of 921198080 in words is "nine hundred twenty-one million, one hundred ninety-eight thousand, eighty".