2640294 has 12 divisors (see below), whose sum is σ = 5720676. Its totient is φ = 880092.

The previous prime is 2640289. The next prime is 2640299. The reversal of 2640294 is 4920462.

It is an interprime number because it is at equal distance from previous prime (2640289) and next prime (2640299).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2640299) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 73324 + ... + 73359.

It is an arithmetic number, because the mean of its divisors is an integer number (476723).

2^2640294 is an apocalyptic number.

2640294 is an abundant number, since it is smaller than the sum of its proper divisors (3080382).

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

2640294 is a wasteful number, since it uses less digits than its factorization.

2640294 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146691 (or 146688 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 2640294 is about 1624.8981506544. The cubic root of 2640294 is about 138.2135948755.

The spelling of 2640294 in words is "two million, six hundred forty thousand, two hundred ninety-four".