30942620 has 12 divisors (see below), whose sum is σ = 64979544. Its totient is φ = 12377040.

The previous prime is 30942617. The next prime is 30942629. The reversal of 30942620 is 2624903.

It is a self number, because there is not a number n which added to its sum of digits gives 30942620.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30942629) 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, 773546 + ... + 773585.

It is an arithmetic number, because the mean of its divisors is an integer number (5414962).

Almost surely, 2^30942620 is an apocalyptic number.

It is an amenable number.

30942620 is an abundant number, since it is smaller than the sum of its proper divisors (34036924).

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

30942620 is a wasteful number, since it uses less digits than its factorization.

30942620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1547140 (or 1547138 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 30942620 is about 5562.6091000537. The cubic root of 30942620 is about 313.9441257229.

The spelling of 30942620 in words is "thirty million, nine hundred forty-two thousand, six hundred twenty".