30387057 has 4 divisors (see below), whose sum is σ = 40516080. Its totient is φ = 20258036.

The previous prime is 30387017. The next prime is 30387079. The reversal of 30387057 is 75078303.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 30387057 - 2¹⁰ = 30386033 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30387017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5064507 + ... + 5064512.

It is an arithmetic number, because the mean of its divisors is an integer number (10129020).

Almost surely, 2^30387057 is an apocalyptic number.

It is an amenable number.

30387057 is a deficient number, since it is larger than the sum of its proper divisors (10129023).

30387057 is a wasteful number, since it uses less digits than its factorization.

30387057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10129022.

The product of its (nonzero) digits is 17640, while the sum is 33.

The square root of 30387057 is about 5512.4456459905. The cubic root of 30387057 is about 312.0538512406.

The spelling of 30387057 in words is "thirty million, three hundred eighty-seven thousand, fifty-seven".