30976893 has 12 divisors (see below), whose sum is σ = 45358300. Its totient is φ = 20367936.

The previous prime is 30976889. The next prime is 30976903. The reversal of 30976893 is 39867903.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 5846724 + 25130169 = 2418^2 + 5013^2 .

It is not a de Polignac number, because 30976893 - 2² = 30976889 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30974893) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22918 + ... + 24231.

Almost surely, 2^30976893 is an apocalyptic number.

It is an amenable number.

30976893 is a deficient number, since it is larger than the sum of its proper divisors (14381407).

30976893 is a wasteful number, since it uses less digits than its factorization.

30976893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47228 (or 47225 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 45.

The square root of 30976893 is about 5565.6889061463. The cubic root of 30976893 is about 314.0599943514.

The spelling of 30976893 in words is "thirty million, nine hundred seventy-six thousand, eight hundred ninety-three".