406188 has 24 divisors (see below), whose sum is σ = 1053360. Its totient is φ = 135360.

The previous prime is 406183. The next prime is 406207. The reversal of 406188 is 881604.

406188 is a `hidden beast` number, since 40 + 618 + 8 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (406183) by changing a digit.

406188 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, 1773 + ... + 1988.

It is an arithmetic number, because the mean of its divisors is an integer number (43890).

2⁴⁰⁶¹⁸⁸ is an apocalyptic number.

It is an amenable number.

406188 is an abundant number, since it is smaller than the sum of its proper divisors (647172).

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

406188 is a wasteful number, since it uses less digits than its factorization.

406188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3774 (or 3766 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 406188 is about 637.3288005418. The cubic root of 406188 is about 74.0586338312.

The spelling of 406188 in words is "four hundred six thousand, one hundred eighty-eight".