30547072 has 16 divisors (see below), whose sum is σ = 60855750. Its totient is φ = 15273472.

The previous prime is 30547061. The next prime is 30547081. The reversal of 30547072 is 27074503.

It can be written as a sum of positive squares in only one way, i.e., 30206016 + 341056 = 5496^2 + 584^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 30547072.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119197 + ... + 119452.

Almost surely, 2^30547072 is an apocalyptic number.

30547072 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

30547072 is a deficient number, since it is larger than the sum of its proper divisors (30308678).

30547072 is an equidigital number, since it uses as much as digits as its factorization.

30547072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238663 (or 238651 counting only the distinct ones).

The product of its (nonzero) digits is 5880, while the sum is 28.

The square root of 30547072 is about 5526.9405641820. The cubic root of 30547072 is about 312.6006400123.

The spelling of 30547072 in words is "thirty million, five hundred forty-seven thousand, seventy-two".