402836 has 12 divisors (see below), whose sum is σ = 805728. Its totient is φ = 172632.

The previous prime is 402823. The next prime is 402847. The reversal of 402836 is 638204.

It is a happy number.

402836 is an admirable number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 402836.

It is an unprimeable number.

402836 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 3 ways as a sum of consecutive naturals, for example, 7166 + ... + 7221.

It is an arithmetic number, because the mean of its divisors is an integer number (67144).

2⁴⁰²⁸³⁶ is an apocalyptic number.

It is an amenable number.

402836 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

402836 is a wasteful number, since it uses less digits than its factorization.

402836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14398 (or 14396 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 402836 is about 634.6936268784. The cubic root of 402836 is about 73.8543519433.

The spelling of 402836 in words is "four hundred two thousand, eight hundred thirty-six".