672009204 has 12 divisors (see below), whose sum is σ = 1568021504. Its totient is φ = 224003064.

The previous prime is 672009181. The next prime is 672009223. The reversal of 672009204 is 402900276.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28000372 + ... + 28000395.

Almost surely, 2^672009204 is an apocalyptic number.

It is an amenable number.

672009204 is an abundant number, since it is smaller than the sum of its proper divisors (896012300).

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

672009204 is a wasteful number, since it uses less digits than its factorization.

672009204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56000774 (or 56000772 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 672009204 is about 25923.1403190277. The cubic root of 672009204 is about 875.9078268774.

The spelling of 672009204 in words is "six hundred seventy-two million, nine thousand, two hundred four".