2815263 has 16 divisors (see below), whose sum is σ = 4550400. Its totient is φ = 1706040.

The previous prime is 2815259. The next prime is 2815271. The reversal of 2815263 is 3625182.

It is not a de Polignac number, because 2815263 - 2² = 2815259 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

2815263 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2815763) 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, 4443 + ... + 5036.

It is an arithmetic number, because the mean of its divisors is an integer number (284400).

2^2815263 is an apocalyptic number.

2815263 is a deficient number, since it is larger than the sum of its proper divisors (1735137).

2815263 is a wasteful number, since it uses less digits than its factorization.

2815263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9499 (or 9493 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 2815263 is about 1677.8745483498. The cubic root of 2815263 is about 141.2016128934.

The spelling of 2815263 in words is "two million, eight hundred fifteen thousand, two hundred sixty-three".