2689940920 has 32 divisors (see below), whose sum is σ = 6079050000. Its totient is φ = 1071232768.

The previous prime is 2689940887. The next prime is 2689940933. The reversal of 2689940920 is 290499862.

It is a happy number.

It is a congruent number.

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, 139045 + ... + 157204.

Almost surely, 2^2689940920 is an apocalyptic number.

2689940920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2689940920 is an abundant number, since it is smaller than the sum of its proper divisors (3389109080).

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

2689940920 is a wasteful number, since it uses less digits than its factorization.

2689940920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296487 (or 296483 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 49.

The square root of 2689940920 is about 51864.6403631607. The cubic root of 2689940920 is about 1390.7452346624.

The spelling of 2689940920 in words is "two billion, six hundred eighty-nine million, nine hundred forty thousand, nine hundred twenty".