30946940 has 12 divisors (see below), whose sum is σ = 64988616. Its totient is φ = 12378768.

The previous prime is 30946939. The next prime is 30946957. The reversal of 30946940 is 4964903.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 30946940.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 773654 + ... + 773693.

It is an arithmetic number, because the mean of its divisors is an integer number (5415718).

Almost surely, 2^30946940 is an apocalyptic number.

It is an amenable number.

30946940 is an abundant number, since it is smaller than the sum of its proper divisors (34041676).

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

30946940 is a wasteful number, since it uses less digits than its factorization.

30946940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1547356 (or 1547354 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 35.

The square root of 30946940 is about 5562.9973934921. The cubic root of 30946940 is about 313.9587352971.

The spelling of 30946940 in words is "thirty million, nine hundred forty-six thousand, nine hundred forty".