812257496 has 8 divisors (see below), whose sum is σ = 1522982820. Its totient is φ = 406128744.

The previous prime is 812257493. The next prime is 812257499. The reversal of 812257496 is 694752218.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (812257493) and next prime (812257499).

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (812257493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50766086 + ... + 50766101.

Almost surely, 2^812257496 is an apocalyptic number.

It is an amenable number.

812257496 is a deficient number, since it is larger than the sum of its proper divisors (710725324).

812257496 is a wasteful number, since it uses less digits than its factorization.

812257496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101532193 (or 101532189 counting only the distinct ones).

The product of its digits is 241920, while the sum is 44.

The square root of 812257496 is about 28500.1315084685. The cubic root of 812257496 is about 933.0349441835.

The spelling of 812257496 in words is "eight hundred twelve million, two hundred fifty-seven thousand, four hundred ninety-six".