2244640 has 24 divisors (see below), whose sum is σ = 5303340. Its totient is φ = 897792.

The previous prime is 2244631. The next prime is 2244653. The reversal of 2244640 is 464422.

It can be written as a sum of positive squares in 2 ways, for example, as 1926544 + 318096 = 1388^2 + 564^2 .

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, 6855 + ... + 7174.

2^2244640 is an apocalyptic number.

2244640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2244640 is an abundant number, since it is smaller than the sum of its proper divisors (3058700).

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

2244640 is a wasteful number, since it uses less digits than its factorization.

2244640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14044 (or 14036 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 2244640 is about 1498.2122680048. The cubic root of 2244640 is about 130.9329338352.

The spelling of 2244640 in words is "two million, two hundred forty-four thousand, six hundred forty".