30409893 has 48 divisors (see below), whose sum is σ = 48372480. Its totient is φ = 18361728.

The previous prime is 30409879. The next prime is 30409909. The reversal of 30409893 is 39890403.

It is not a de Polignac number, because 30409893 - 2⁴ = 30409877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30409193) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 453846 + ... + 453912.

It is an arithmetic number, because the mean of its divisors is an integer number (1007760).

Almost surely, 2^30409893 is an apocalyptic number.

It is an amenable number.

30409893 is a deficient number, since it is larger than the sum of its proper divisors (17962587).

30409893 is a wasteful number, since it uses less digits than its factorization.

30409893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186 (or 183 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 30409893 is about 5514.5165699271. The cubic root of 30409893 is about 312.1320015904.

The spelling of 30409893 in words is "thirty million, four hundred nine thousand, eight hundred ninety-three".