405802 has 16 divisors (see below), whose sum is σ = 655200. Its totient is φ = 187920.

The previous prime is 405799. The next prime is 405817. The reversal of 405802 is 208504.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a self number, because there is not a number n which added to its sum of digits gives 405802.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2152 + ... + 2332.

It is an arithmetic number, because the mean of its divisors is an integer number (40950).

2⁴⁰⁵⁸⁰² is an apocalyptic number.

405802 is a deficient number, since it is larger than the sum of its proper divisors (249398).

405802 is a wasteful number, since it uses less digits than its factorization.

405802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 405802 is about 637.0259021421. The cubic root of 405802 is about 74.0351671173.

The spelling of 405802 in words is "four hundred five thousand, eight hundred two".