30672920 has 64 divisors (see below), whose sum is σ = 72122400. Its totient is φ = 11729920.

The previous prime is 30672893. The next prime is 30672931. The reversal of 30672920 is 2927603.

It is a congruent number.

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, 96602 + ... + 96918.

Almost surely, 2^30672920 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 30672920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36061200).

30672920 is an abundant number, since it is smaller than the sum of its proper divisors (41449480).

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

30672920 is a wasteful number, since it uses less digits than its factorization.

30672920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428 (or 424 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 30672920 is about 5538.3138228165. The cubic root of 30672920 is about 313.0293364630.

The spelling of 30672920 in words is "thirty million, six hundred seventy-two thousand, nine hundred twenty".