30100857 has 4 divisors (see below), whose sum is σ = 40134480. Its totient is φ = 20067236.

The previous prime is 30100853. The next prime is 30100871. The reversal of 30100857 is 75800103.

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 30100857 - 2² = 30100853 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30100853) 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, 5016807 + ... + 5016812.

It is an arithmetic number, because the mean of its divisors is an integer number (10033620).

Almost surely, 2^30100857 is an apocalyptic number.

It is an amenable number.

30100857 is a deficient number, since it is larger than the sum of its proper divisors (10033623).

30100857 is a wasteful number, since it uses less digits than its factorization.

30100857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10033622.

The product of its (nonzero) digits is 840, while the sum is 24.

The square root of 30100857 is about 5486.4247921575. The cubic root of 30100857 is about 311.0710679424.

The spelling of 30100857 in words is "thirty million, one hundred thousand, eight hundred fifty-seven".