30947612 has 12 divisors (see below), whose sum is σ = 54695256. Its totient is φ = 15320400.

The previous prime is 30947603. The next prime is 30947617. The reversal of 30947612 is 21674903.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30947617) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37898 + ... + 38705.

It is an arithmetic number, because the mean of its divisors is an integer number (4557938).

Almost surely, 2^30947612 is an apocalyptic number.

It is an amenable number.

30947612 is a deficient number, since it is larger than the sum of its proper divisors (23747644).

30947612 is a wasteful number, since it uses less digits than its factorization.

30947612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76708 (or 76706 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 30947612 is about 5563.0577922578. The cubic root of 30947612 is about 313.9610077753.

The spelling of 30947612 in words is "thirty million, nine hundred forty-seven thousand, six hundred twelve".