2288857 has 4 divisors (see below), whose sum is σ = 2350756. Its totient is φ = 2226960.

The previous prime is 2288849. The next prime is 2288861. The reversal of 2288857 is 7588822.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1547536 + 741321 = 1244^2 + 861^2 .

It is a cyclic number.

It is not a de Polignac number, because 2288857 - 2³ = 2288849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2288807) 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, 30894 + ... + 30967.

It is an arithmetic number, because the mean of its divisors is an integer number (587689).

2^2288857 is an apocalyptic number.

It is an amenable number.

2288857 is a deficient number, since it is larger than the sum of its proper divisors (61899).

2288857 is an equidigital number, since it uses as much as digits as its factorization.

2288857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61898.

The product of its digits is 71680, while the sum is 40.

The square root of 2288857 is about 1512.8968900755. The cubic root of 2288857 is about 131.7870955702.

The spelling of 2288857 in words is "two million, two hundred eighty-eight thousand, eight hundred fifty-seven".