12557994 has 8 divisors (see below), whose sum is σ = 25116000. Its totient is φ = 4185996.

The previous prime is 12557981. The next prime is 12558017. The reversal of 12557994 is 49975521.

It is a sphenic number, since it is the product of 3 distinct primes.

12557994 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1046494 + ... + 1046505.

It is an arithmetic number, because the mean of its divisors is an integer number (3139500).

Almost surely, 2^12557994 is an apocalyptic number.

12557994 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

12557994 is a wasteful number, since it uses less digits than its factorization.

12557994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2093004.

The product of its digits is 113400, while the sum is 42.

The square root of 12557994 is about 3543.7260052098. The cubic root of 12557994 is about 232.4378004502.

The spelling of 12557994 in words is "twelve million, five hundred fifty-seven thousand, nine hundred ninety-four".