30639026 has 16 divisors (see below), whose sum is σ = 50340960. Its totient is φ = 13870080.

The previous prime is 30639017. The next prime is 30639043. The reversal of 30639026 is 62093603.

It is a self number, because there is not a number n which added to its sum of digits gives 30639026.

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, 2945 + ... + 8363.

It is an arithmetic number, because the mean of its divisors is an integer number (3146310).

Almost surely, 2^30639026 is an apocalyptic number.

30639026 is a deficient number, since it is larger than the sum of its proper divisors (19701934).

30639026 is a wasteful number, since it uses less digits than its factorization.

30639026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5689.

The product of its (nonzero) digits is 5832, while the sum is 29.

The square root of 30639026 is about 5535.2530204138. The cubic root of 30639026 is about 312.9139933881.

The spelling of 30639026 in words is "thirty million, six hundred thirty-nine thousand, twenty-six".