812408 has 16 divisors (see below), whose sum is σ = 1534680. Its totient is φ = 403168.

The previous prime is 812401. The next prime is 812431. The reversal of 812408 is 804218.

812408 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (812401) by changing a digit.

812408 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1091 + ... + 1677.

2⁸¹²⁴⁰⁸ is an apocalyptic number.

It is an amenable number.

812408 is a deficient number, since it is larger than the sum of its proper divisors (722272).

812408 is a wasteful number, since it uses less digits than its factorization.

812408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 766 (or 762 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 23.

The square root of 812408 is about 901.3367850033. The cubic root of 812408 is about 93.3092568282.

The spelling of 812408 in words is "eight hundred twelve thousand, four hundred eight".