812861496 has 96 divisors (see below), whose sum is σ = 2345616000. Its totient is φ = 253564992.

The previous prime is 812861461. The next prime is 812861501. The reversal of 812861496 is 694168218.

812861496 is a `hidden beast` number, since 8 + 1 + 28 + 614 + 9 + 6 = 666.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 109965 + ... + 117123.

It is an arithmetic number, because the mean of its divisors is an integer number (24433500).

Almost surely, 2^812861496 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 812861496, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1172808000).

812861496 is an abundant number, since it is smaller than the sum of its proper divisors (1532754504).

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

812861496 is a wasteful number, since it uses less digits than its factorization.

812861496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7273 (or 7266 counting only the distinct ones).

The product of its digits is 165888, while the sum is 45.

The square root of 812861496 is about 28510.7259816372. The cubic root of 812861496 is about 933.2661571833.

The spelling of 812861496 in words is "eight hundred twelve million, eight hundred sixty-one thousand, four hundred ninety-six".