2569988 has 12 divisors (see below), whose sum is σ = 4522140. Its totient is φ = 1277952.

The previous prime is 2569979. The next prime is 2570011. The reversal of 2569988 is 8899652.

It can be written as a sum of positive squares in 2 ways, for example, as 806404 + 1763584 = 898^2 + 1328^2 .

It is an Ulam 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, 893 + ... + 2436.

It is an arithmetic number, because the mean of its divisors is an integer number (376845).

2^2569988 is an apocalyptic number.

It is an amenable number.

2569988 is a deficient number, since it is larger than the sum of its proper divisors (1952152).

2569988 is a wasteful number, since it uses less digits than its factorization.

2569988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3526 (or 3524 counting only the distinct ones).

The product of its digits is 311040, while the sum is 47.

The square root of 2569988 is about 1603.1182114866. The cubic root of 2569988 is about 136.9757536078.

The spelling of 2569988 in words is "two million, five hundred sixty-nine thousand, nine hundred eighty-eight".