30990894 has 32 divisors (see below), whose sum is σ = 67824000. Its totient is φ = 9362400.

The previous prime is 30990889. The next prime is 30990899. The reversal of 30990894 is 49809903.

It is an interprime number because it is at equal distance from previous prime (30990889) and next prime (30990899).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30990899) 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, 32464 + ... + 33404.

It is an arithmetic number, because the mean of its divisors is an integer number (2119500).

Almost surely, 2^30990894 is an apocalyptic number.

30990894 is an abundant number, since it is smaller than the sum of its proper divisors (36833106).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30990894 is a wasteful number, since it uses less digits than its factorization.

30990894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1456.

The product of its (nonzero) digits is 69984, while the sum is 42.

The square root of 30990894 is about 5566.9465598297. The cubic root of 30990894 is about 314.1073037192.

The spelling of 30990894 in words is "thirty million, nine hundred ninety thousand, eight hundred ninety-four".