30120057 has 24 divisors (see below), whose sum is σ = 47648640. Its totient is φ = 18182880.

The previous prime is 30120047. The next prime is 30120061. The reversal of 30120057 is 75002103.

It is not a de Polignac number, because 30120057 - 2¹¹ = 30118009 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30120017) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 35919 + ... + 36747.

It is an arithmetic number, because the mean of its divisors is an integer number (1985360).

Almost surely, 2^30120057 is an apocalyptic number.

It is an amenable number.

30120057 is a deficient number, since it is larger than the sum of its proper divisors (17528583).

30120057 is a wasteful number, since it uses less digits than its factorization.

30120057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1213 (or 1210 counting only the distinct ones).

The product of its (nonzero) digits is 210, while the sum is 18.

The square root of 30120057 is about 5488.1742865911. The cubic root of 30120057 is about 311.1371933585.

The spelling of 30120057 in words is "thirty million, one hundred twenty thousand, fifty-seven".