815238552 has 32 divisors (see below), whose sum is σ = 2038870080. Its totient is φ = 271643040.

The previous prime is 815238521. The next prime is 815238559. The reversal of 815238552 is 255832518.

It is a super-2 number, since 2×815238552² = 1329227793334113408, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 815238552.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (815238559) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83983 + ... + 93185.

It is an arithmetic number, because the mean of its divisors is an integer number (63714690).

Almost surely, 2^815238552 is an apocalyptic number.

It is an amenable number.

815238552 is an abundant number, since it is smaller than the sum of its proper divisors (1223631528).

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

815238552 is a wasteful number, since it uses less digits than its factorization.

815238552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12903 (or 12899 counting only the distinct ones).

The product of its digits is 96000, while the sum is 39.

The square root of 815238552 is about 28552.3825976047. The cubic root of 815238552 is about 934.1749905591.

The spelling of 815238552 in words is "eight hundred fifteen million, two hundred thirty-eight thousand, five hundred fifty-two".