30788564 has 12 divisors (see below), whose sum is σ = 57049524. Its totient is φ = 14488704.

The previous prime is 30788557. The next prime is 30788567. The reversal of 30788564 is 46588703.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 16875664 + 13912900 = 4108^2 + 3730^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30788567) 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, 226319 + ... + 226454.

It is an arithmetic number, because the mean of its divisors is an integer number (4754127).

Almost surely, 2^30788564 is an apocalyptic number.

30788564 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is an amenable number.

30788564 is a deficient number, since it is larger than the sum of its proper divisors (26260960).

30788564 is a wasteful number, since it uses less digits than its factorization.

30788564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 452794 (or 452792 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 41.

The square root of 30788564 is about 5548.7443624662. The cubic root of 30788564 is about 313.4222407530.

The spelling of 30788564 in words is "thirty million, seven hundred eighty-eight thousand, five hundred sixty-four".