30939516 has 24 divisors (see below), whose sum is σ = 80213840. Its totient is φ = 10313136.

The previous prime is 30939509. The next prime is 30939523. The reversal of 30939516 is 61593903.

It is an interprime number because it is at equal distance from previous prime (30939509) and next prime (30939523).

It is a Harshad number since it is a multiple of its sum of digits (36).

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 7 ways as a sum of consecutive naturals, for example, 143131 + ... + 143346.

Almost surely, 2^30939516 is an apocalyptic number.

30939516 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

30939516 is an abundant number, since it is smaller than the sum of its proper divisors (49274324).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30939516 is a wasteful number, since it uses less digits than its factorization.

30939516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286490 (or 286482 counting only the distinct ones).

The product of its (nonzero) digits is 21870, while the sum is 36.

The square root of 30939516 is about 5562.3300872926. The cubic root of 30939516 is about 313.9336276337.

The spelling of 30939516 in words is "thirty million, nine hundred thirty-nine thousand, five hundred sixteen".