30409885 has 16 divisors (see below), whose sum is σ = 39961152. Its totient is φ = 22032000.

The previous prime is 30409879. The next prime is 30409909. The reversal of 30409885 is 58890403.

It is not a de Polignac number, because 30409885 - 2³ = 30409877 is a prime.

It is a super-2 number, since 2×30409885² = 1849522211426450, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15985 + ... + 17785.

It is an arithmetic number, because the mean of its divisors is an integer number (2497572).

Almost surely, 2^30409885 is an apocalyptic number.

It is an amenable number.

30409885 is a deficient number, since it is larger than the sum of its proper divisors (9551267).

30409885 is a wasteful number, since it uses less digits than its factorization.

30409885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2124.

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 30409885 is about 5514.5158445688. The cubic root of 30409885 is about 312.1319742193.

The spelling of 30409885 in words is "thirty million, four hundred nine thousand, eight hundred eighty-five".