808815312 has 60 divisors (see below), whose sum is σ = 2266270500. Its totient is φ = 269282304.

The previous prime is 808815311. The next prime is 808815317. The reversal of 808815312 is 213518808.

It can be written as a sum of positive squares in 2 ways, for example, as 353590416 + 455224896 = 18804^2 + 21336^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (808815311) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 137814 + ... + 143562.

It is an arithmetic number, because the mean of its divisors is an integer number (37771175).

Almost surely, 2^808815312 is an apocalyptic number.

It is an amenable number.

808815312 is an abundant number, since it is smaller than the sum of its proper divisors (1457455188).

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

808815312 is a wasteful number, since it uses less digits than its factorization.

808815312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6740 (or 6731 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 36.

The square root of 808815312 is about 28439.6784791952. The cubic root of 808815312 is about 931.7150731251.

The spelling of 808815312 in words is "eight hundred eight million, eight hundred fifteen thousand, three hundred twelve".