30047057 has 8 divisors (see below), whose sum is σ = 30590976. Its totient is φ = 29508192.

The previous prime is 30047051. The next prime is 30047081. The reversal of 30047057 is 75074003.

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

It is a cyclic number.

It is not a de Polignac number, because 30047057 - 2⁸ = 30046801 is a prime.

It is a super-2 number, since 2×30047057² = 1805651268722498, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30047051) 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, 11933 + ... + 14229.

It is an arithmetic number, because the mean of its divisors is an integer number (3823872).

Almost surely, 2^30047057 is an apocalyptic number.

It is an amenable number.

30047057 is a deficient number, since it is larger than the sum of its proper divisors (543919).

30047057 is a wasteful number, since it uses less digits than its factorization.

30047057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2527.

The product of its (nonzero) digits is 2940, while the sum is 26.

The square root of 30047057 is about 5481.5195885813. The cubic root of 30047057 is about 310.8856291023.

The spelling of 30047057 in words is "thirty million, forty-seven thousand, fifty-seven".