30724164 has 24 divisors (see below), whose sum is σ = 79655520. Its totient is φ = 10241352.

The previous prime is 30724163. The next prime is 30724181. The reversal of 30724164 is 46142703.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (30724163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 142134 + ... + 142349.

It is an arithmetic number, because the mean of its divisors is an integer number (3318980).

Almost surely, 2^30724164 is an apocalyptic number.

It is an amenable number.

30724164 is an abundant number, since it is smaller than the sum of its proper divisors (48931356).

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

30724164 is a wasteful number, since it uses less digits than its factorization.

30724164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284496 (or 284488 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 30724164 is about 5542.9382100110. The cubic root of 30724164 is about 313.2035612695.

Adding to 30724164 its reverse (46142703), we get a palindrome (76866867).

The spelling of 30724164 in words is "thirty million, seven hundred twenty-four thousand, one hundred sixty-four".