30724057 has 8 divisors (see below), whose sum is σ = 37814336. Its totient is φ = 24309072.

The previous prime is 30724051. The next prime is 30724063. The reversal of 30724057 is 75042703.

It is an interprime number because it is at equal distance from previous prime (30724051) and next prime (30724063).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30724057 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30724051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 168723 + ... + 168904.

It is an arithmetic number, because the mean of its divisors is an integer number (4726792).

Almost surely, 2^30724057 is an apocalyptic number.

It is an amenable number.

30724057 is a deficient number, since it is larger than the sum of its proper divisors (7090279).

30724057 is a wasteful number, since it uses less digits than its factorization.

30724057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337647.

The product of its (nonzero) digits is 5880, while the sum is 28.

The square root of 30724057 is about 5542.9285580819. The cubic root of 30724057 is about 313.2031976814.

The spelling of 30724057 in words is "thirty million, seven hundred twenty-four thousand, fifty-seven".