2640260 has 24 divisors (see below), whose sum is σ = 6336960. Its totient is φ = 905184.

The previous prime is 2640251. The next prime is 2640271. The reversal of 2640260 is 620462.

2640260 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 (20).

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 9290 + ... + 9569.

It is an arithmetic number, because the mean of its divisors is an integer number (264040).

2^2640260 is an apocalyptic number.

2640260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2640260 is an abundant number, since it is smaller than the sum of its proper divisors (3696700).

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

2640260 is a wasteful number, since it uses less digits than its factorization.

2640260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18875 (or 18873 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 2640260 is about 1624.8876884265. The cubic root of 2640260 is about 138.2130015979.

It can be divided in two parts, 26402 and 60, that added together give a palindrome (26462).

The spelling of 2640260 in words is "two million, six hundred forty thousand, two hundred sixty".