30636912 has 20 divisors (see below), whose sum is σ = 79145480. Its totient is φ = 10212288.

The previous prime is 30636901. The next prime is 30636913. The reversal of 30636912 is 21963603.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 30636912.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30636913) 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, 319087 + ... + 319182.

It is an arithmetic number, because the mean of its divisors is an integer number (3957274).

Almost surely, 2^30636912 is an apocalyptic number.

It is an amenable number.

30636912 is an abundant number, since it is smaller than the sum of its proper divisors (48508568).

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

30636912 is a wasteful number, since it uses less digits than its factorization.

30636912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 638280 (or 638274 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 30.

The square root of 30636912 is about 5535.0620592727. The cubic root of 30636912 is about 312.9067965167.

The spelling of 30636912 in words is "thirty million, six hundred thirty-six thousand, nine hundred twelve".