672311730 has 16 divisors (see below), whose sum is σ = 1613548224. Its totient is φ = 179283120.

The previous prime is 672311729. The next prime is 672311737. The reversal of 672311730 is 37113276.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 22410391 = 672311730 / (6 + 7 + 2 + 3 + 1 + 1 + 7 + 3 + 0).

It is not an unprimeable number, because it can be changed into a prime (672311737) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11205166 + ... + 11205225.

It is an arithmetic number, because the mean of its divisors is an integer number (100846764).

Almost surely, 2^672311730 is an apocalyptic number.

672311730 is an abundant number, since it is smaller than the sum of its proper divisors (941236494).

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

672311730 is a wasteful number, since it uses less digits than its factorization.

672311730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22410401.

The product of its (nonzero) digits is 5292, while the sum is 30.

The square root of 672311730 is about 25928.9747194138. The cubic root of 672311730 is about 876.0392462765.

The spelling of 672311730 in words is "six hundred seventy-two million, three hundred eleven thousand, seven hundred thirty".