30772989 has 48 divisors (see below), whose sum is σ = 51251200. Its totient is φ = 17635968.

The previous prime is 30772981. The next prime is 30772991. The reversal of 30772989 is 98927703.

It is not a de Polignac number, because 30772989 - 2³ = 30772981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30772981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 242244 + ... + 242370.

Almost surely, 2^30772989 is an apocalyptic number.

30772989 is a gapful number since it is divisible by the number (39) formed by its first and last digit.

It is an amenable number.

30772989 is a deficient number, since it is larger than the sum of its proper divisors (20478211).

30772989 is a wasteful number, since it uses less digits than its factorization.

30772989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274 (or 271 counting only the distinct ones).

The product of its (nonzero) digits is 190512, while the sum is 45.

The square root of 30772989 is about 5547.3407142522. The cubic root of 30772989 is about 313.3693815726.

The spelling of 30772989 in words is "thirty million, seven hundred seventy-two thousand, nine hundred eighty-nine".