12990894 has 32 divisors (see below), whose sum is σ = 30329856. Its totient is φ = 3632160.

The previous prime is 12990871. The next prime is 12990899. The reversal of 12990894 is 49809921.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12990899) 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, 1317 + ... + 5264.

It is an arithmetic number, because the mean of its divisors is an integer number (947808).

Almost surely, 2^12990894 is an apocalyptic number.

12990894 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

12990894 is an abundant number, since it is smaller than the sum of its proper divisors (17338962).

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

12990894 is a wasteful number, since it uses less digits than its factorization.

12990894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6640.

The product of its (nonzero) digits is 46656, while the sum is 42.

The square root of 12990894 is about 3604.2882792585. The cubic root of 12990894 is about 235.0785552981.

The spelling of 12990894 in words is "twelve million, nine hundred ninety thousand, eight hundred ninety-four".