80922640 has 40 divisors (see below), whose sum is σ = 188612928. Its totient is φ = 32288640.

The previous prime is 80922629. The next prime is 80922649. The reversal of 80922640 is 4622908.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (80922649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39235 + ... + 41245.

Almost surely, 2^80922640 is an apocalyptic number.

80922640 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

80922640 is an abundant number, since it is smaller than the sum of its proper divisors (107690288).

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

80922640 is a wasteful number, since it uses less digits than its factorization.

80922640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2527 (or 2521 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 80922640 is about 8995.7011955711. The cubic root of 80922640 is about 432.5370834809.

The spelling of 80922640 in words is "eighty million, nine hundred twenty-two thousand, six hundred forty".