2288520 has 128 divisors (see below), whose sum is σ = 8265600. Its totient is φ = 559872.

The previous prime is 2288509. The next prime is 2288527. The reversal of 2288520 is 258822.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2288527) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13959 + ... + 14121.

It is an arithmetic number, because the mean of its divisors is an integer number (64575).

2^2288520 is an apocalyptic number.

2288520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2288520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4132800).

2288520 is an abundant number, since it is smaller than the sum of its proper divisors (5977080).

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

2288520 is a wasteful number, since it uses less digits than its factorization.

2288520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196 (or 186 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 27.

The square root of 2288520 is about 1512.7855102426. The cubic root of 2288520 is about 131.7806273591.

The spelling of 2288520 in words is "two million, two hundred eighty-eight thousand, five hundred twenty".