2539812 has 48 divisors (see below), whose sum is σ = 6580224. Its totient is φ = 756000.

The previous prime is 2539777. The next prime is 2539829. The reversal of 2539812 is 2189352.

It is a happy number.

Its product of digits (4320) is a multiple of the sum of its prime factors (360).

It is a zygodrome in base 5.

It is a self number, because there is not a number n which added to its sum of digits gives 2539812.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9237 + ... + 9507.

It is an arithmetic number, because the mean of its divisors is an integer number (137088).

2^2539812 is an apocalyptic number.

2539812 is a gapful number since it is divisible by the number (22) 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 2539812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3290112).

2539812 is an abundant number, since it is smaller than the sum of its proper divisors (4040412).

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

2539812 is a wasteful number, since it uses less digits than its factorization.

2539812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360 (or 358 counting only the distinct ones).

The product of its digits is 4320, while the sum is 30.

The square root of 2539812 is about 1593.6787631138. The cubic root of 2539812 is about 136.4375326348.

The spelling of 2539812 in words is "two million, five hundred thirty-nine thousand, eight hundred twelve".