30079881 has 12 divisors (see below), whose sum is σ = 46791108. Its totient is φ = 18510624.

The previous prime is 30079879. The next prime is 30079901. The reversal of 30079881 is 18897003.

It can be written as a sum of positive squares in 2 ways, for example, as 4161600 + 25918281 = 2040^2 + 5091^2 .

It is not a de Polignac number, because 30079881 - 2¹ = 30079879 is a prime.

It is a super-2 number, since 2×30079881² = 1809598481948322, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (30079871) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 128430 + ... + 128663.

It is an arithmetic number, because the mean of its divisors is an integer number (3899259).

Almost surely, 2^30079881 is an apocalyptic number.

It is an amenable number.

30079881 is a deficient number, since it is larger than the sum of its proper divisors (16711227).

30079881 is a wasteful number, since it uses less digits than its factorization.

30079881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257112 (or 257109 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 30079881 is about 5484.5128316014. The cubic root of 30079881 is about 310.9987937767.

The spelling of 30079881 in words is "thirty million, seventy-nine thousand, eight hundred eighty-one".