30472156 has 72 divisors (see below), whose sum is σ = 65691360. Its totient is φ = 12270720.

The previous prime is 30472151. The next prime is 30472159. The reversal of 30472156 is 65127403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30472151) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 182385 + ... + 182551.

It is an arithmetic number, because the mean of its divisors is an integer number (912380).

Almost surely, 2^30472156 is an apocalyptic number.

It is an amenable number.

30472156 is an abundant number, since it is smaller than the sum of its proper divisors (35219204).

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

30472156 is a wasteful number, since it uses less digits than its factorization.

30472156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235 (or 222 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 30472156 is about 5520.1590556795. The cubic root of 30472156 is about 312.3448821625.

Adding to 30472156 its reverse (65127403), we get a palindrome (95599559).

It can be divided in two parts, 30472 and 156, that added together give a triangular number (30628 = T₂₄₇).

The spelling of 30472156 in words is "thirty million, four hundred seventy-two thousand, one hundred fifty-six".