2531808 has 72 divisors (see below), whose sum is σ = 7371000. Its totient is φ = 824064.

The previous prime is 2531803. The next prime is 2531821. The reversal of 2531808 is 8081352.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2531803) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16918 + ... + 17066.

It is an arithmetic number, because the mean of its divisors is an integer number (102375).

2^2531808 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2531808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3685500).

2531808 is an abundant number, since it is smaller than the sum of its proper divisors (4839192).

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

2531808 is a wasteful number, since it uses less digits than its factorization.

2531808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224 (or 213 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 2531808 is about 1591.1656104881. The cubic root of 2531808 is about 136.2940580801.

The spelling of 2531808 in words is "two million, five hundred thirty-one thousand, eight hundred eight".