30838893 has 16 divisors (see below), whose sum is σ = 42663936. Its totient is φ = 19793520.

The previous prime is 30838889. The next prime is 30838903. The reversal of 30838893 is 39883803.

It is not a de Polignac number, because 30838893 - 2² = 30838889 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30838813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19996 + ... + 21482.

It is an arithmetic number, because the mean of its divisors is an integer number (2666496).

Almost surely, 2^30838893 is an apocalyptic number.

It is an amenable number.

30838893 is a deficient number, since it is larger than the sum of its proper divisors (11825043).

30838893 is a wasteful number, since it uses less digits than its factorization.

30838893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1744.

The product of its (nonzero) digits is 124416, while the sum is 42.

The square root of 30838893 is about 5553.2776807936. The cubic root of 30838893 is about 313.5929279445.

The spelling of 30838893 in words is "thirty million, eight hundred thirty-eight thousand, eight hundred ninety-three".