813088 has 12 divisors (see below), whose sum is σ = 1600830. Its totient is φ = 406528.

The previous prime is 813083. The next prime is 813089. The reversal of 813088 is 880318.

It can be written as a sum of positive squares in only one way, i.e., 795664 + 17424 = 892^2 + 132^2 .

It is a super-2 number, since 2×813088² = 1322224191488, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (813083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12673 + ... + 12736.

2⁸¹³⁰⁸⁸ is an apocalyptic number.

It is an amenable number.

813088 is a deficient number, since it is larger than the sum of its proper divisors (787742).

813088 is a wasteful number, since it uses less digits than its factorization.

813088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25419 (or 25411 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 28.

The square root of 813088 is about 901.7139235922. The cubic root of 813088 is about 93.3352834060.

The spelling of 813088 in words is "eight hundred thirteen thousand, eighty-eight".