2666240 has 36 divisors (see below), whose sum is σ = 6389544. Its totient is φ = 1065984.

The previous prime is 2666227. The next prime is 2666267. The reversal of 2666240 is 426662.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 239 + ... + 2321.

2^2666240 is an apocalyptic number.

2666240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2666240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3194772).

2666240 is an abundant number, since it is smaller than the sum of its proper divisors (3723304).

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

2666240 is an equidigital number, since it uses as much as digits as its factorization.

2666240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2104 (or 2090 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 2666240 is about 1632.8625171765. The cubic root of 2666240 is about 138.6648586221.

It can be divided in two parts, 26 and 66240, that added together give a palindrome (66266).

The spelling of 2666240 in words is "two million, six hundred sixty-six thousand, two hundred forty".