813132 has 24 divisors (see below), whose sum is σ = 2108400. Its totient is φ = 271008.

The previous prime is 813121. The next prime is 813133. The reversal of 813132 is 231318.

It is a super-2 number, since 2×813132² = 1322367298848, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (813133) 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, 3657 + ... + 3872.

It is an arithmetic number, because the mean of its divisors is an integer number (87850).

2⁸¹³¹³² is an apocalyptic number.

It is an amenable number.

813132 is an abundant number, since it is smaller than the sum of its proper divisors (1295268).

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

813132 is a wasteful number, since it uses less digits than its factorization.

813132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7542 (or 7534 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 813132 is about 901.7383212440. The cubic root of 813132 is about 93.3369669787.

The spelling of 813132 in words is "eight hundred thirteen thousand, one hundred thirty-two".