2805136 has 20 divisors (see below), whose sum is σ = 5755212. Its totient is φ = 1319936.

The previous prime is 2805113. The next prime is 2805137. The reversal of 2805136 is 6315082.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1690000 + 1115136 = 1300^2 + 1056^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2805136.

It is not an unprimeable number, because it can be changed into a prime (2805137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4885 + ... + 5428.

2^2805136 is an apocalyptic number.

It is an amenable number.

2805136 is an abundant number, since it is smaller than the sum of its proper divisors (2950076).

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

2805136 is a wasteful number, since it uses less digits than its factorization.

2805136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10338 (or 10332 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 2805136 is about 1674.8540234898. The cubic root of 2805136 is about 141.0321003989.

The spelling of 2805136 in words is "two million, eight hundred five thousand, one hundred thirty-six".