672407420 has 12 divisors (see below), whose sum is σ = 1412055624. Its totient is φ = 268962960.

The previous prime is 672407419. The next prime is 672407423. The reversal of 672407420 is 24704276.

It is a super-3 number, since 3×672407420³ (a number of 27 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (672407423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16810166 + ... + 16810205.

It is an arithmetic number, because the mean of its divisors is an integer number (117671302).

Almost surely, 2^672407420 is an apocalyptic number.

It is an amenable number.

672407420 is an abundant number, since it is smaller than the sum of its proper divisors (739648204).

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

672407420 is a wasteful number, since it uses less digits than its factorization.

672407420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33620380 (or 33620378 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 32.

The square root of 672407420 is about 25930.8198867679. The cubic root of 672407420 is about 876.0808064710.

The spelling of 672407420 in words is "six hundred seventy-two million, four hundred seven thousand, four hundred twenty".