2587220 has 12 divisors (see below), whose sum is σ = 5433204. Its totient is φ = 1034880.

The previous prime is 2587217. The next prime is 2587253. The reversal of 2587220 is 227852.

2587220 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 1359556 + 1227664 = 1166^2 + 1108^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2587220.

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, 64661 + ... + 64700.

It is an arithmetic number, because the mean of its divisors is an integer number (452767).

2^2587220 is an apocalyptic number.

2587220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2587220 is an abundant number, since it is smaller than the sum of its proper divisors (2845984).

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

2587220 is a wasteful number, since it uses less digits than its factorization.

2587220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129370 (or 129368 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 2587220 is about 1608.4837580778. The cubic root of 2587220 is about 137.2812168059.

The spelling of 2587220 in words is "two million, five hundred eighty-seven thousand, two hundred twenty".