30639214 has 16 divisors (see below), whose sum is σ = 46569600. Its totient is φ = 15117624.

The previous prime is 30639211. The next prime is 30639221. The reversal of 30639214 is 41293603.

It is a super-2 number, since 2×30639214² = 1877522869075592, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30639211) by changing a digit.

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, 85167 + ... + 85525.

It is an arithmetic number, because the mean of its divisors is an integer number (2910600).

Almost surely, 2^30639214 is an apocalyptic number.

30639214 is a deficient number, since it is larger than the sum of its proper divisors (15930386).

30639214 is a wasteful number, since it uses less digits than its factorization.

30639214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 807.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 30639214 is about 5535.2700024479. The cubic root of 30639214 is about 312.9146333966.

The spelling of 30639214 in words is "thirty million, six hundred thirty-nine thousand, two hundred fourteen".