30638894 has 24 divisors (see below), whose sum is σ = 54407640. Its totient is φ = 12854160.

The previous prime is 30638837. The next prime is 30638911. The reversal of 30638894 is 49883603.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 1724 + ... + 8015.

It is an arithmetic number, because the mean of its divisors is an integer number (2266985).

Almost surely, 2^30638894 is an apocalyptic number.

30638894 is a deficient number, since it is larger than the sum of its proper divisors (23768746).

30638894 is a wasteful number, since it uses less digits than its factorization.

30638894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9776 (or 9765 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 41.

The square root of 30638894 is about 5535.2410968268. The cubic root of 30638894 is about 312.9135440189.

The spelling of 30638894 in words is "thirty million, six hundred thirty-eight thousand, eight hundred ninety-four".