30894993 has 16 divisors (see below), whose sum is σ = 45873600. Its totient is φ = 20550240.

The previous prime is 30894989. The next prime is 30895013. The reversal of 30894993 is 39949803.

It is not a de Polignac number, because 30894993 - 2² = 30894989 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30894923) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14358 + ... + 16368.

It is an arithmetic number, because the mean of its divisors is an integer number (2867100).

Almost surely, 2^30894993 is an apocalyptic number.

It is an amenable number.

30894993 is a deficient number, since it is larger than the sum of its proper divisors (14978607).

30894993 is a wasteful number, since it uses less digits than its factorization.

30894993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2589 (or 2583 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 45.

The square root of 30894993 is about 5558.3264567674. The cubic root of 30894993 is about 313.7829683403.

The spelling of 30894993 in words is "thirty million, eight hundred ninety-four thousand, nine hundred ninety-three".