813272394 has 16 divisors (see below), whose sum is σ = 1774412640. Its totient is φ = 246446160.

The previous prime is 813272377. The next prime is 813272417. The reversal of 813272394 is 493272318.

It is a super-2 number, since 2×813272394² = 1322823973684982472, which contains 22 as substring.

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, 6161089 + ... + 6161220.

It is an arithmetic number, because the mean of its divisors is an integer number (110900790).

Almost surely, 2^813272394 is an apocalyptic number.

813272394 is an abundant number, since it is smaller than the sum of its proper divisors (961140246).

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

813272394 is a wasteful number, since it uses less digits than its factorization.

813272394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12322325.

The product of its digits is 72576, while the sum is 39.

The square root of 813272394 is about 28517.9310960666. The cubic root of 813272394 is about 933.4233847069.

The spelling of 813272394 in words is "eight hundred thirteen million, two hundred seventy-two thousand, three hundred ninety-four".