2500806 has 32 divisors (see below), whose sum is σ = 6236928. Its totient is φ = 649440.

The previous prime is 2500783. The next prime is 2500807. The reversal of 2500806 is 6080052.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2500807) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2245 + ... + 3168.

It is an arithmetic number, because the mean of its divisors is an integer number (194904).

2^2500806 is an apocalyptic number.

2500806 is an abundant number, since it is smaller than the sum of its proper divisors (3736122).

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

2500806 is a wasteful number, since it uses less digits than its factorization.

2500806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5436.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 2500806 is about 1581.3936891236. The cubic root of 2500806 is about 135.7354647332.

Adding to 2500806 its reverse (6080052), we get a palindrome (8580858).

The spelling of 2500806 in words is "two million, five hundred thousand, eight hundred six".