30688982 has 4 divisors (see below), whose sum is σ = 46033476. Its totient is φ = 15344490.

The previous prime is 30688967. The next prime is 30688997. The reversal of 30688982 is 28988603.

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

It is an interprime number because it is at equal distance from previous prime (30688967) and next prime (30688997).

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 as a sum of consecutive naturals, namely, 7672244 + ... + 7672247.

It is an arithmetic number, because the mean of its divisors is an integer number (11508369).

Almost surely, 2^30688982 is an apocalyptic number.

30688982 is a deficient number, since it is larger than the sum of its proper divisors (15344494).

30688982 is a wasteful number, since it uses less digits than its factorization.

30688982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15344493.

The product of its (nonzero) digits is 165888, while the sum is 44.

The square root of 30688982 is about 5539.7637133726. The cubic root of 30688982 is about 313.0839666258.

The spelling of 30688982 in words is "thirty million, six hundred eighty-eight thousand, nine hundred eighty-two".