2566788 has 24 divisors (see below), whose sum is σ = 6844992. Its totient is φ = 733344.

The previous prime is 2566787. The next prime is 2566807. The reversal of 2566788 is 8876652.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (2566783) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15195 + ... + 15362.

It is an arithmetic number, because the mean of its divisors is an integer number (285208).

2^2566788 is an apocalyptic number.

2566788 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2566788 is an abundant number, since it is smaller than the sum of its proper divisors (4278204).

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

2566788 is a wasteful number, since it uses less digits than its factorization.

2566788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30571 (or 30569 counting only the distinct ones).

The product of its digits is 161280, while the sum is 42.

The square root of 2566788 is about 1602.1198457044. The cubic root of 2566788 is about 136.9188785741.

It can be divided in two parts, 256678 and 8, that added together give a triangular number (256686 = T₇₁₆).

The spelling of 2566788 in words is "two million, five hundred sixty-six thousand, seven hundred eighty-eight".