30943120 has 40 divisors (see below), whose sum is σ = 77479416. Its totient is φ = 11424768.

The previous prime is 30943109. The next prime is 30943139. The reversal of 30943120 is 2134903.

It can be written as a sum of positive squares in 4 ways, for example, as 5702544 + 25240576 = 2388^2 + 5024^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 30943091 and 30943100.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13837 + ... + 15916.

Almost surely, 2^30943120 is an apocalyptic number.

It is an amenable number.

30943120 is an abundant number, since it is smaller than the sum of its proper divisors (46536296).

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

30943120 is a wasteful number, since it uses less digits than its factorization.

30943120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29779 (or 29773 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 30943120 is about 5562.6540428109. The cubic root of 30943120 is about 313.9458167154.

The spelling of 30943120 in words is "thirty million, nine hundred forty-three thousand, one hundred twenty".