672072040 has 24 divisors (see below), whose sum is σ = 1512531090. Its totient is φ = 268763232.

The previous prime is 672072031. The next prime is 672072059. The reversal of 672072040 is 40270276.

It can be written as a sum of positive squares in only one way, i.e., 604864836 + 67207204 = 24594^2 + 8198^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 161911 + ... + 166009.

Almost surely, 2^672072040 is an apocalyptic number.

It is an amenable number.

672072040 is an abundant number, since it is smaller than the sum of its proper divisors (840459050).

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

672072040 is an frugal number, since it uses more digits than its factorization.

672072040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8209 (or 4106 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 28.

The square root of 672072040 is about 25924.3522580604. The cubic root of 672072040 is about 875.9351265178.

The spelling of 672072040 in words is "six hundred seventy-two million, seventy-two thousand, forty".