30660772 has 24 divisors (see below), whose sum is σ = 56077560. Its totient is φ = 14649600.

The previous prime is 30660761. The next prime is 30660787. The reversal of 30660772 is 27706603.

It can be written as a sum of positive squares in 4 ways, for example, as 22052416 + 8608356 = 4696^2 + 2934^2 .

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

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, 10408 + ... + 13024.

It is an arithmetic number, because the mean of its divisors is an integer number (2336565).

Almost surely, 2^30660772 is an apocalyptic number.

It is an amenable number.

30660772 is a deficient number, since it is larger than the sum of its proper divisors (25416788).

30660772 is a wasteful number, since it uses less digits than its factorization.

30660772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2751 (or 2749 counting only the distinct ones).

The product of its (nonzero) digits is 10584, while the sum is 31.

The square root of 30660772 is about 5537.2169905107. The cubic root of 30660772 is about 312.9880059506.

The spelling of 30660772 in words is "thirty million, six hundred sixty thousand, seven hundred seventy-two".