815852 has 12 divisors (see below), whose sum is σ = 1452360. Its totient is φ = 400896.

The previous prime is 815851. The next prime is 815869. The reversal of 815852 is 258518.

It is a super-2 number, since 2×815852² = 1331228971808, which contains 22 as substring.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (815851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1493 + ... + 1964.

It is an arithmetic number, because the mean of its divisors is an integer number (121030).

2⁸¹⁵⁸⁵² is an apocalyptic number.

It is an amenable number.

815852 is a deficient number, since it is larger than the sum of its proper divisors (636508).

815852 is a wasteful number, since it uses less digits than its factorization.

815852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3520 (or 3518 counting only the distinct ones).

The product of its digits is 3200, while the sum is 29.

The square root of 815852 is about 903.2452601592. The cubic root of 815852 is about 93.4409246777.

The spelling of 815852 in words is "eight hundred fifteen thousand, eight hundred fifty-two".