2640992 has 12 divisors (see below), whose sum is σ = 5199516. Its totient is φ = 1320480.

The previous prime is 2640973. The next prime is 2640997. The reversal of 2640992 is 2990462.

2640992 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (32), and also a Moran number because the ratio is a prime number: 82531 = 2640992 / (2 + 6 + 4 + 0 + 9 + 9 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2640997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41234 + ... + 41297.

It is an arithmetic number, because the mean of its divisors is an integer number (433293).

2^2640992 is an apocalyptic number.

It is an amenable number.

2640992 is a deficient number, since it is larger than the sum of its proper divisors (2558524).

2640992 is an equidigital number, since it uses as much as digits as its factorization.

2640992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82541 (or 82533 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 2640992 is about 1625.1129191536. The cubic root of 2640992 is about 138.2257733916.

The spelling of 2640992 in words is "two million, six hundred forty thousand, nine hundred ninety-two".