405246 has 32 divisors (see below), whose sum is σ = 894240. Its totient is φ = 121856.

The previous prime is 405241. The next prime is 405247. The reversal of 405246 is 642504.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405241) by changing a digit.

405246 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2890 + ... + 3026.

It is an arithmetic number, because the mean of its divisors is an integer number (27945).

2⁴⁰⁵²⁴⁶ is an apocalyptic number.

405246 is an abundant number, since it is smaller than the sum of its proper divisors (488994).

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

405246 is a wasteful number, since it uses less digits than its factorization.

405246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 405246 is about 636.5893495810. The cubic root of 405246 is about 74.0013391528.

The spelling of 405246 in words is "four hundred five thousand, two hundred forty-six".