812470400 has 384 divisors, whose sum is σ = 2549836800. Its totient is φ = 249384960.

The previous prime is 812470397. The next prime is 812470427. The reversal of 812470400 is 4074218.

It is a self number, because there is not a number n which added to its sum of digits gives 812470400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9788759 + ... + 9788841.

It is an arithmetic number, because the mean of its divisors is an integer number (6640200).

Almost surely, 2^812470400 is an apocalyptic number.

812470400 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 812470400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1274918400).

812470400 is an abundant number, since it is smaller than the sum of its proper divisors (1737366400).

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

812470400 is a wasteful number, since it uses less digits than its factorization.

812470400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156 (or 139 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 26.

The square root of 812470400 is about 28503.8664044021. The cubic root of 812470400 is about 933.1164575457.

The spelling of 812470400 in words is "eight hundred twelve million, four hundred seventy thousand, four hundred".