813162256 has 15 divisors (see below), whose sum is σ = 1575722901. Its totient is φ = 406524096.

The previous prime is 813162253. The next prime is 813162281. The reversal of 813162256 is 652261318.

The square root of 813162256 is 28516.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 514563856 + 298598400 = 22684^2 + 17280^2 .

It is a super-2 number, since 2×813162256² = 1322465709166019072, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (813162253) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 110500 + ... + 117628.

Almost surely, 2^813162256 is an apocalyptic number.

813162256 is the 28516-th square number.

It is an amenable number.

813162256 is a deficient number, since it is larger than the sum of its proper divisors (762560645).

813162256 is an frugal number, since it uses more digits than its factorization.

813162256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14266 (or 7131 counting only the distinct ones).

The product of its digits is 17280, while the sum is 34.

The cubic root of 813162256 is about 933.3812462932.

The spelling of 813162256 in words is "eight hundred thirteen million, one hundred sixty-two thousand, two hundred fifty-six".