2263640 has 16 divisors (see below), whose sum is σ = 5093280. Its totient is φ = 905440.

The previous prime is 2263633. The next prime is 2263643. The reversal of 2263640 is 463622.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2263643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28256 + ... + 28335.

It is an arithmetic number, because the mean of its divisors is an integer number (318330).

2^2263640 is an apocalyptic number.

2263640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2263640 is an abundant number, since it is smaller than the sum of its proper divisors (2829640).

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

2263640 is a wasteful number, since it uses less digits than its factorization.

2263640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56602 (or 56598 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 2263640 is about 1504.5397967485. The cubic root of 2263640 is about 131.3013283747.

The spelling of 2263640 in words is "two million, two hundred sixty-three thousand, six hundred forty".