2287640 has 16 divisors (see below), whose sum is σ = 5147280. Its totient is φ = 915040.

The previous prime is 2287633. The next prime is 2287661. The reversal of 2287640 is 467822.

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, 28556 + ... + 28635.

It is an arithmetic number, because the mean of its divisors is an integer number (321705).

2^2287640 is an apocalyptic number.

2287640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2287640 is an abundant number, since it is smaller than the sum of its proper divisors (2859640).

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

2287640 is a wasteful number, since it uses less digits than its factorization.

2287640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57202 (or 57198 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 2287640 is about 1512.4946280896. The cubic root of 2287640 is about 131.7637340802.

The spelling of 2287640 in words is "two million, two hundred eighty-seven thousand, six hundred forty".