30012972 has 24 divisors (see below), whose sum is σ = 76396992. Its totient is φ = 9094800.

The previous prime is 30012971. The next prime is 30012977. The reversal of 30012972 is 27921003.

It is not an unprimeable number, because it can be changed into a prime (30012971) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113554 + ... + 113817.

It is an arithmetic number, because the mean of its divisors is an integer number (3183208).

Almost surely, 2^30012972 is an apocalyptic number.

It is an amenable number.

30012972 is an abundant number, since it is smaller than the sum of its proper divisors (46384020).

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

30012972 is a wasteful number, since it uses less digits than its factorization.

30012972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227389 (or 227387 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 24.

The square root of 30012972 is about 5478.4096232392. The cubic root of 30012972 is about 310.7680297197.

Adding to 30012972 its reverse (27921003), we get a palindrome (57933975).

The spelling of 30012972 in words is "thirty million, twelve thousand, nine hundred seventy-two".