2689988 has 24 divisors (see below), whose sum is σ = 5615232. Its totient is φ = 1102464.

The previous prime is 2689979. The next prime is 2689991. The reversal of 2689988 is 8899862.

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, 1445 + ... + 2732.

It is an arithmetic number, because the mean of its divisors is an integer number (233968).

2^2689988 is an apocalyptic number.

2689988 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2689988 is an abundant number, since it is smaller than the sum of its proper divisors (2925244).

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

2689988 is a wasteful number, since it uses less digits than its factorization.

2689988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4211 (or 4209 counting only the distinct ones).

The product of its digits is 497664, while the sum is 50.

The square root of 2689988 is about 1640.1182884170. The cubic root of 2689988 is about 139.0753348335.

The spelling of 2689988 in words is "two million, six hundred eighty-nine thousand, nine hundred eighty-eight".