30672138 has 24 divisors (see below), whose sum is σ = 71360352. Its totient is φ = 8763384.

The previous prime is 30672127. The next prime is 30672143. The reversal of 30672138 is 83127603.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 51870 + ... + 52457.

It is an arithmetic number, because the mean of its divisors is an integer number (2973348).

Almost surely, 2^30672138 is an apocalyptic number.

30672138 is an abundant number, since it is smaller than the sum of its proper divisors (40688214).

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

30672138 is a wasteful number, since it uses less digits than its factorization.

30672138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104346 (or 104339 counting only the distinct ones).

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

The square root of 30672138 is about 5538.2432232613. The cubic root of 30672138 is about 313.0266762335.

The spelling of 30672138 in words is "thirty million, six hundred seventy-two thousand, one hundred thirty-eight".