30924972 has 144 divisors (see below), whose sum is σ = 93562560. Its totient is φ = 8566272.

The previous prime is 30924937. The next prime is 30924983. The reversal of 30924972 is 27942903.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1344553 + ... + 1344575.

It is an arithmetic number, because the mean of its divisors is an integer number (649740).

Almost surely, 2^30924972 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 30924972, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46781280).

30924972 is an abundant number, since it is smaller than the sum of its proper divisors (62637588).

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

30924972 is a wasteful number, since it uses less digits than its factorization.

30924972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89 (or 58 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 30924972 is about 5561.0225678377. The cubic root of 30924972 is about 313.8844287785.

It can be divided in two parts, 309 and 24972, that added together give a square (25281 = 159²).

The spelling of 30924972 in words is "thirty million, nine hundred twenty-four thousand, nine hundred seventy-two".