30986772 has 24 divisors (see below), whose sum is σ = 72981216. Its totient is φ = 10231968.

The previous prime is 30986759. The next prime is 30986803. The reversal of 30986772 is 27768903.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10783 + ... + 13350.

It is an arithmetic number, because the mean of its divisors is an integer number (3040884).

Almost surely, 2^30986772 is an apocalyptic number.

It is an amenable number.

30986772 is an abundant number, since it is smaller than the sum of its proper divisors (41994444).

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

30986772 is a wasteful number, since it uses less digits than its factorization.

30986772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24247 (or 24245 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 42.

The square root of 30986772 is about 5566.5763266123. The cubic root of 30986772 is about 314.0933769647.

It can be divided in two parts, 3098 and 6772, that added together give a triangular number (9870 = T₁₄₀).

The spelling of 30986772 in words is "thirty million, nine hundred eighty-six thousand, seven hundred seventy-two".