30943992 has 16 divisors (see below), whose sum is σ = 77360040. Its totient is φ = 10314656.

The previous prime is 30943943. The next prime is 30943999. The reversal of 30943992 is 29934903.

It is a self number, because there is not a number n which added to its sum of digits gives 30943992.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30943999) 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 3 ways as a sum of consecutive naturals, for example, 644643 + ... + 644690.

Almost surely, 2^30943992 is an apocalyptic number.

It is an amenable number.

30943992 is an abundant number, since it is smaller than the sum of its proper divisors (46416048).

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

30943992 is a wasteful number, since it uses less digits than its factorization.

30943992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1289342 (or 1289338 counting only the distinct ones).

The product of its (nonzero) digits is 52488, while the sum is 39.

The square root of 30943992 is about 5562.7324221106. The cubic root of 30943992 is about 313.9487657628.

The spelling of 30943992 in words is "thirty million, nine hundred forty-three thousand, nine hundred ninety-two".