30472872 has 16 divisors (see below), whose sum is σ = 76182240. Its totient is φ = 10157616.

The previous prime is 30472847. The next prime is 30472889. The reversal of 30472872 is 27827403.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

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, 634828 + ... + 634875.

It is an arithmetic number, because the mean of its divisors is an integer number (4761390).

Almost surely, 2^30472872 is an apocalyptic number.

It is an amenable number.

30472872 is an abundant number, since it is smaller than the sum of its proper divisors (45709368).

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

30472872 is a wasteful number, since it uses less digits than its factorization.

30472872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1269712 (or 1269708 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 33.

The square root of 30472872 is about 5520.2239085023. The cubic root of 30472872 is about 312.3473285180.

The spelling of 30472872 in words is "thirty million, four hundred seventy-two thousand, eight hundred seventy-two".