30188272 has 20 divisors (see below), whose sum is σ = 58730616. Its totient is φ = 15032000.

The previous prime is 30188267. The next prime is 30188273. The reversal of 30188272 is 27288103.

It is a super-2 number, since 2×30188272² = 1822663532691968, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30188273) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 258 + ... + 7774.

Almost surely, 2^30188272 is an apocalyptic number.

It is an amenable number.

30188272 is a deficient number, since it is larger than the sum of its proper divisors (28542344).

30188272 is a wasteful number, since it uses less digits than its factorization.

30188272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7776 (or 7770 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 30188272 is about 5494.3854979424. The cubic root of 30188272 is about 311.3719009833.

The spelling of 30188272 in words is "thirty million, one hundred eighty-eight thousand, two hundred seventy-two".