2689940 has 24 divisors (see below), whose sum is σ = 6162912. Its totient is φ = 978080.

The previous prime is 2689931. The next prime is 2689943. The reversal of 2689940 is 499862.

2689940 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 2689894 and 2689903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2689943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5894 + ... + 6333.

It is an arithmetic number, because the mean of its divisors is an integer number (256788).

2^2689940 is an apocalyptic number.

2689940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2689940 is an abundant number, since it is smaller than the sum of its proper divisors (3472972).

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

2689940 is a wasteful number, since it uses less digits than its factorization.

2689940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12247 (or 12245 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 2689940 is about 1640.1036552608. The cubic root of 2689940 is about 139.0745076110.

The spelling of 2689940 in words is "two million, six hundred eighty-nine thousand, nine hundred forty".