2587860 has 72 divisors (see below), whose sum is σ = 8570016. Its totient is φ = 626880.

The previous prime is 2587847. The next prime is 2587861. The reversal of 2587860 is 687852.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2587861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1327 + ... + 2633.

It is an arithmetic number, because the mean of its divisors is an integer number (119028).

2^2587860 is an apocalyptic number.

2587860 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 2587860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4285008).

2587860 is an abundant number, since it is smaller than the sum of its proper divisors (5982156).

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

2587860 is a wasteful number, since it uses less digits than its factorization.

2587860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1333 (or 1328 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 2587860 is about 1608.6826908996. The cubic root of 2587860 is about 137.2925356134.

It can be divided in two parts, 258 and 7860, that added together give a palindrome (8118).

The spelling of 2587860 in words is "two million, five hundred eighty-seven thousand, eight hundred sixty".