2265816 has 32 divisors (see below), whose sum is σ = 6474240. Its totient is φ = 647328.

The previous prime is 2265797. The next prime is 2265841. The reversal of 2265816 is 6185622.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6576 + ... + 6911.

It is an arithmetic number, because the mean of its divisors is an integer number (202320).

2^2265816 is an apocalyptic number.

It is an amenable number.

2265816 is an abundant number, since it is smaller than the sum of its proper divisors (4208424).

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

2265816 is a wasteful number, since it uses less digits than its factorization.

2265816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13503 (or 13499 counting only the distinct ones).

The product of its digits is 5760, while the sum is 30.

The square root of 2265816 is about 1505.2627677585. The cubic root of 2265816 is about 131.3433875051.

It can be divided in two parts, 2265 and 816, that added together give a triangular number (3081 = T₇₈).

The spelling of 2265816 in words is "two million, two hundred sixty-five thousand, eight hundred sixteen".