80037640 has 16 divisors (see below), whose sum is σ = 180084780. Its totient is φ = 32015040.

The previous prime is 80037637. The next prime is 80037667. The reversal of 80037640 is 4673008.

It can be written as a sum of positive squares in 2 ways, for example, as 80030916 + 6724 = 8946^2 + 82^2 .

It is a junction number, because it is equal to n+sod(n) for n = 80037599 and 80037608.

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, 1000431 + ... + 1000510.

Almost surely, 2^80037640 is an apocalyptic number.

It is an amenable number.

80037640 is an abundant number, since it is smaller than the sum of its proper divisors (100047140).

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

80037640 is a wasteful number, since it uses less digits than its factorization.

80037640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2000952 (or 2000948 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 80037640 is about 8946.3758025247. The cubic root of 80037640 is about 430.9545048455.

The spelling of 80037640 in words is "eighty million, thirty-seven thousand, six hundred forty".