30159972 has 48 divisors (see below), whose sum is σ = 82797120. Its totient is φ = 9461376.

The previous prime is 30159953. The next prime is 30159977. The reversal of 30159972 is 27995103.

It is a super-2 number, since 2×30159972² = 1819247822081568, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (30159977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6378 + ... + 10049.

It is an arithmetic number, because the mean of its divisors is an integer number (1724940).

Almost surely, 2^30159972 is an apocalyptic number.

It is an amenable number.

30159972 is an abundant number, since it is smaller than the sum of its proper divisors (52637148).

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

30159972 is a wasteful number, since it uses less digits than its factorization.

30159972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16457 (or 16449 counting only the distinct ones).

The product of its (nonzero) digits is 17010, while the sum is 36.

The square root of 30159972 is about 5491.8095378482. The cubic root of 30159972 is about 311.2745720186.

The spelling of 30159972 in words is "thirty million, one hundred fifty-nine thousand, nine hundred seventy-two".