30634636 has 24 divisors (see below), whose sum is σ = 55311984. Its totient is φ = 14838720.

The previous prime is 30634621. The next prime is 30634649. The reversal of 30634636 is 63643603.

It is a junction number, because it is equal to n+sod(n) for n = 30634598 and 30634607.

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, 16726 + ... + 18466.

It is an arithmetic number, because the mean of its divisors is an integer number (2304666).

Almost surely, 2^30634636 is an apocalyptic number.

It is an amenable number.

30634636 is a deficient number, since it is larger than the sum of its proper divisors (24677348).

30634636 is a wasteful number, since it uses less digits than its factorization.

30634636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1881 (or 1879 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 31.

The square root of 30634636 is about 5534.8564570366. The cubic root of 30634636 is about 312.8990477646.

The spelling of 30634636 in words is "thirty million, six hundred thirty-four thousand, six hundred thirty-six".