30057943 has 12 divisors (see below), whose sum is σ = 32342328. Its totient is φ = 27920880.

The previous prime is 30057931. The next prime is 30057953. The reversal of 30057943 is 34975003.

It is a de Polignac number, because none of the positive numbers 2^k-30057943 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30057913) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18348 + ... + 19918.

It is an arithmetic number, because the mean of its divisors is an integer number (2695194).

Almost surely, 2^30057943 is an apocalyptic number.

30057943 is a deficient number, since it is larger than the sum of its proper divisors (2284385).

30057943 is a wasteful number, since it uses less digits than its factorization.

30057943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1662 (or 1643 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 31.

The square root of 30057943 is about 5482.5124714860. The cubic root of 30057943 is about 310.9231690221.

The spelling of 30057943 in words is "thirty million, fifty-seven thousand, nine hundred forty-three".