812806410 has 64 divisors (see below), whose sum is σ = 2140483968. Its totient is φ = 196295424.

The previous prime is 812806373. The next prime is 812806429. The reversal of 812806410 is 14608218.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1009 + ... + 40331.

It is an arithmetic number, because the mean of its divisors is an integer number (33445062).

Almost surely, 2^812806410 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 812806410, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1070241984).

812806410 is an abundant number, since it is smaller than the sum of its proper divisors (1327677558).

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

812806410 is a wasteful number, since it uses less digits than its factorization.

812806410 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39399.

The product of its (nonzero) digits is 3072, while the sum is 30.

The square root of 812806410 is about 28509.7599077930. The cubic root of 812806410 is about 933.2450748459.

The spelling of 812806410 in words is "eight hundred twelve million, eight hundred six thousand, four hundred ten".