815803152 has 40 divisors (see below), whose sum is σ = 2218414560. Its totient is φ = 257621760.

The previous prime is 815803139. The next prime is 815803187. The reversal of 815803152 is 251308518.

It is a happy 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, 446349 + ... + 448172.

It is an arithmetic number, because the mean of its divisors is an integer number (55460364).

Almost surely, 2^815803152 is an apocalyptic number.

It is an amenable number.

815803152 is an abundant number, since it is smaller than the sum of its proper divisors (1402611408).

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

815803152 is a wasteful number, since it uses less digits than its factorization.

815803152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 894551 (or 894545 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 33.

The square root of 815803152 is about 28562.2679771758. The cubic root of 815803152 is about 934.3905975883.

The spelling of 815803152 in words is "eight hundred fifteen million, eight hundred three thousand, one hundred fifty-two".