406836 has 24 divisors (see below), whose sum is σ = 1055040. Its totient is φ = 135576.

The previous prime is 406817. The next prime is 406837. The reversal of 406836 is 638604.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406837) by changing a digit.

406836 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 7 ways as a sum of consecutive naturals, for example, 1776 + ... + 1991.

It is an arithmetic number, because the mean of its divisors is an integer number (43960).

2⁴⁰⁶⁸³⁶ is an apocalyptic number.

It is an amenable number.

406836 is an abundant number, since it is smaller than the sum of its proper divisors (648204).

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

406836 is a wasteful number, since it uses less digits than its factorization.

406836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3780 (or 3772 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 406836 is about 637.8369697658. The cubic root of 406836 is about 74.0979953235.

The spelling of 406836 in words is "four hundred six thousand, eight hundred thirty-six".