91920760 has 16 divisors (see below), whose sum is σ = 206821800. Its totient is φ = 36768288.

The previous prime is 91920739. The next prime is 91920793. The reversal of 91920760 is 6702919.

It is a super-2 number, since 2×91920760² = 16898852237955200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1148970 + ... + 1149049.

Almost surely, 2^91920760 is an apocalyptic number.

It is an amenable number.

91920760 is an abundant number, since it is smaller than the sum of its proper divisors (114901040).

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

91920760 is a wasteful number, since it uses less digits than its factorization.

91920760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2298030 (or 2298026 counting only the distinct ones).

The product of its (nonzero) digits is 6804, while the sum is 34.

The square root of 91920760 is about 9587.5314862586. The cubic root of 91920760 is about 451.3060984628.

The spelling of 91920760 in words is "ninety-one million, nine hundred twenty thousand, seven hundred sixty".