672812920 has 64 divisors (see below), whose sum is σ = 1657081440. Its totient is φ = 244339200.

The previous prime is 672812909. The next prime is 672812929. The reversal of 672812920 is 29218276.

It is a self number, because there is not a number n which added to its sum of digits gives 672812920.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (672812929) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21115 + ... + 42325.

Almost surely, 2^672812920 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 672812920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (828540720).

672812920 is an abundant number, since it is smaller than the sum of its proper divisors (984268520).

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

672812920 is a wasteful number, since it uses less digits than its factorization.

672812920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21296 (or 21292 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 672812920 is about 25938.6375895111. The cubic root of 672812920 is about 876.2568799686.

The spelling of 672812920 in words is "six hundred seventy-two million, eight hundred twelve thousand, nine hundred twenty".