30639086 has 4 divisors (see below), whose sum is σ = 45958632. Its totient is φ = 15319542.

The previous prime is 30639073. The next prime is 30639097. The reversal of 30639086 is 68093603.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7659770 + ... + 7659773.

It is an arithmetic number, because the mean of its divisors is an integer number (11489658).

Almost surely, 2^30639086 is an apocalyptic number.

30639086 is a deficient number, since it is larger than the sum of its proper divisors (15319546).

30639086 is a wasteful number, since it uses less digits than its factorization.

30639086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15319545.

The product of its (nonzero) digits is 23328, while the sum is 35.

The square root of 30639086 is about 5535.2584402176. The cubic root of 30639086 is about 312.9141976464.

The spelling of 30639086 in words is "thirty million, six hundred thirty-nine thousand, eighty-six".