2587788 has 90 divisors (see below), whose sum is σ = 7917756. Its totient is φ = 734832.

The previous prime is 2587771. The next prime is 2587789. The reversal of 2587788 is 8877852.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (2587789) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 15795 + ... + 15957.

2^2587788 is an apocalyptic number.

2587788 is a gapful number since it is divisible by the number (28) 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 2587788, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3958878).

2587788 is an abundant number, since it is smaller than the sum of its proper divisors (5329968).

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

2587788 is a wasteful number, since it uses less digits than its factorization.

2587788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193 (or 175 counting only the distinct ones).

The product of its digits is 250880, while the sum is 45.

The square root of 2587788 is about 1608.6603121853. The cubic root of 2587788 is about 137.2912623407.

Subtracting 2587788 from its reverse (8877852), we obtain a square (6290064 = 2508²).

It can be divided in two parts, 2587 and 788, that added together give a cube (3375 = 15³).

The spelling of 2587788 in words is "two million, five hundred eighty-seven thousand, seven hundred eighty-eight".