2543994 has 16 divisors (see below), whose sum is σ = 5653440. Its totient is φ = 847980.

The previous prime is 2543971. The next prime is 2544011. The reversal of 2543994 is 4993452.

It is a d-powerful number, because it can be written as 2¹⁹ + 5⁹ + 4⁵ + 3 + 9 + 9 + 4⁸ .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23502 + ... + 23609.

It is an arithmetic number, because the mean of its divisors is an integer number (353340).

2^2543994 is an apocalyptic number.

2543994 is an abundant number, since it is smaller than the sum of its proper divisors (3109446).

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

2543994 is a wasteful number, since it uses less digits than its factorization.

2543994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47122 (or 47116 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 2543994 is about 1594.9902821021. The cubic root of 2543994 is about 136.5123766099.

The spelling of 2543994 in words is "two million, five hundred forty-three thousand, nine hundred ninety-four".