672399120 has 80 divisors (see below), whose sum is σ = 2091330432. Its totient is φ = 178713600.

The previous prime is 672399109. The next prime is 672399137. The reversal of 672399120 is 21993276.

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

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70645 + ... + 79595.

Almost surely, 2^672399120 is an apocalyptic number.

672399120 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 672399120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1045665216).

672399120 is an abundant number, since it is smaller than the sum of its proper divisors (1418931312).

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

672399120 is a wasteful number, since it uses less digits than its factorization.

672399120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9280 (or 9274 counting only the distinct ones).

The product of its (nonzero) digits is 40824, while the sum is 39.

The square root of 672399120 is about 25930.6598450560. The cubic root of 672399120 is about 876.0772017613.

The spelling of 672399120 in words is "six hundred seventy-two million, three hundred ninety-nine thousand, one hundred twenty".