402858 has 12 divisors (see below), whose sum is σ = 872898. Its totient is φ = 134280.

The previous prime is 402851. The next prime is 402859. The reversal of 402858 is 858204.

402858 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 328329 + 74529 = 573^2 + 273^2 .

It is not an unprimeable number, because it can be changed into a prime (402851) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11173 + ... + 11208.

2⁴⁰²⁸⁵⁸ is an apocalyptic number.

402858 is an abundant number, since it is smaller than the sum of its proper divisors (470040).

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

402858 is a wasteful number, since it uses less digits than its factorization.

402858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22389 (or 22386 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 27.

The square root of 402858 is about 634.7109578383. The cubic root of 402858 is about 73.8556963830.

The spelling of 402858 in words is "four hundred two thousand, eight hundred fifty-eight".