2681240 has 32 divisors (see below), whose sum is σ = 6389280. Its totient is φ = 1009152.

The previous prime is 2681213. The next prime is 2681249. The reversal of 2681240 is 421862.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2681249) 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, 1292 + ... + 2651.

It is an arithmetic number, because the mean of its divisors is an integer number (199665).

2^2681240 is an apocalyptic number.

2681240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2681240 is an abundant number, since it is smaller than the sum of its proper divisors (3708040).

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

2681240 is a wasteful number, since it uses less digits than its factorization.

2681240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3971 (or 3967 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 2681240 is about 1637.4492358544. The cubic root of 2681240 is about 138.9244107069.

The spelling of 2681240 in words is "two million, six hundred eighty-one thousand, two hundred forty".