30136864 has 24 divisors (see below), whose sum is σ = 59499468. Its totient is φ = 15025920.

The previous prime is 30136861. The next prime is 30136891. The reversal of 30136864 is 46863103.

It can be written as a sum of positive squares in 2 ways, for example, as 28944400 + 1192464 = 5380^2 + 1092^2 .

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

It is not an unprimeable number, because it can be changed into a prime (30136861) 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, 12354 + ... + 14590.

Almost surely, 2^30136864 is an apocalyptic number.

It is an amenable number.

30136864 is a deficient number, since it is larger than the sum of its proper divisors (29362604).

30136864 is a wasteful number, since it uses less digits than its factorization.

30136864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2668 (or 2660 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 30136864 is about 5489.7052744205. The cubic root of 30136864 is about 311.1950541439.

Adding to 30136864 its reverse (46863103), we get a palindrome (76999967).

The spelling of 30136864 in words is "thirty million, one hundred thirty-six thousand, eight hundred sixty-four".