30733872 has 40 divisors (see below), whose sum is σ = 85504944. Its totient is φ = 9456384.

The previous prime is 30733837. The next prime is 30733877. The reversal of 30733872 is 27833703.

It is a happy number.

It is a super-2 number, since 2×30733872² = 1889141776224768, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (30733877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24003 + ... + 25250.

Almost surely, 2^30733872 is an apocalyptic number.

It is an amenable number.

30733872 is an abundant number, since it is smaller than the sum of its proper divisors (54771072).

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

30733872 is a wasteful number, since it uses less digits than its factorization.

30733872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49277 (or 49271 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 33.

The square root of 30733872 is about 5543.8138496887. The cubic root of 30733872 is about 313.2365457307.

The spelling of 30733872 in words is "thirty million, seven hundred thirty-three thousand, eight hundred seventy-two".