815803132 has 12 divisors (see below), whose sum is σ = 1428250096. Its totient is φ = 407731680.

The previous prime is 815803127. The next prime is 815803139. The reversal of 815803132 is 231308518.

It is a junction number, because it is equal to n+sod(n) for n = 815803094 and 815803103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (815803139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31344 + ... + 51127.

Almost surely, 2^815803132 is an apocalyptic number.

It is an amenable number.

815803132 is a deficient number, since it is larger than the sum of its proper divisors (612446964).

815803132 is a wasteful number, since it uses less digits than its factorization.

815803132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84948 (or 84946 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 815803132 is about 28562.2676270635. The cubic root of 815803132 is about 934.3905899525.

The spelling of 815803132 in words is "eight hundred fifteen million, eight hundred three thousand, one hundred thirty-two".