30057072 has 20 divisors (see below), whose sum is σ = 77647560. Its totient is φ = 10019008.

The previous prime is 30057047. The next prime is 30057089. The reversal of 30057072 is 27075003.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 313047 + ... + 313142.

It is an arithmetic number, because the mean of its divisors is an integer number (3882378).

Almost surely, 2^30057072 is an apocalyptic number.

It is an amenable number.

30057072 is an abundant number, since it is smaller than the sum of its proper divisors (47590488).

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

30057072 is a wasteful number, since it uses less digits than its factorization.

30057072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 626200 (or 626194 counting only the distinct ones).

The product of its (nonzero) digits is 1470, while the sum is 24.

The square root of 30057072 is about 5482.4330365268. The cubic root of 30057072 is about 310.9201657483.

The spelling of 30057072 in words is "thirty million, fifty-seven thousand, seventy-two".