30555072 has 42 divisors (see below), whose sum is σ = 87582248. Its totient is φ = 10184832.

The previous prime is 30555071. The next prime is 30555073. The reversal of 30555072 is 27055503.

It is an interprime number because it is at equal distance from previous prime (30555071) and next prime (30555073).

It is a super-2 number, since 2×30555072² = 1867224849850368, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30555071) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 25948 + ... + 27099.

Almost surely, 2^30555072 is an apocalyptic number.

30555072 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

30555072 is an abundant number, since it is smaller than the sum of its proper divisors (57027176).

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

30555072 is a wasteful number, since it uses less digits than its factorization.

30555072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53065 (or 53052 counting only the distinct ones).

The product of its (nonzero) digits is 5250, while the sum is 27.

The square root of 30555072 is about 5527.6642445069. The cubic root of 30555072 is about 312.6279267174.

The spelling of 30555072 in words is "thirty million, five hundred fifty-five thousand, seventy-two".