8207406 has 40 divisors (see below), whose sum is σ = 19035720. Its totient is φ = 2639952.

The previous prime is 8207399. The next prime is 8207429. The reversal of 8207406 is 6047028.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 8207406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3825 + ... + 5571.

It is an arithmetic number, because the mean of its divisors is an integer number (475893).

Almost surely, 2^8207406 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8207406, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9517860).

8207406 is an abundant number, since it is smaller than the sum of its proper divisors (10828314).

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

8207406 is a wasteful number, since it uses less digits than its factorization.

8207406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1790 (or 1781 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 8207406 is about 2864.8570644973. The cubic root of 8207406 is about 201.7136582735.

The spelling of 8207406 in words is "eight million, two hundred seven thousand, four hundred six".