30947630 has 16 divisors (see below), whose sum is σ = 63663840. Its totient is φ = 10610592.

The previous prime is 30947621. The next prime is 30947639. The reversal of 30947630 is 3674903.

It is an interprime number because it is at equal distance from previous prime (30947621) and next prime (30947639).

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 (30947639) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 220985 + ... + 221124.

It is an arithmetic number, because the mean of its divisors is an integer number (3978990).

Almost surely, 2^30947630 is an apocalyptic number.

30947630 is an abundant number, since it is smaller than the sum of its proper divisors (32716210).

30947630 is a wasteful number, since it uses less digits than its factorization.

30947630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442123.

The product of its (nonzero) digits is 13608, while the sum is 32.

The square root of 30947630 is about 5563.0594100728. The cubic root of 30947630 is about 313.9610686448.

The spelling of 30947630 in words is "thirty million, nine hundred forty-seven thousand, six hundred thirty".