858402 has 24 divisors (see below), whose sum is σ = 1881984. Its totient is φ = 282744.

The previous prime is 858397. The next prime is 858427. The reversal of 858402 is 204858.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 858402.

It is an unprimeable number.

858402 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 11 ways as a sum of consecutive naturals, for example, 1623 + ... + 2085.

It is an arithmetic number, because the mean of its divisors is an integer number (78416).

2⁸⁵⁸⁴⁰² is an apocalyptic number.

It is a pronic number, being equal to 926×927.

858402 is an abundant number, since it is smaller than the sum of its proper divisors (1023582).

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

858402 is a wasteful number, since it uses less digits than its factorization.

858402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 574 (or 571 counting only the distinct ones).

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

The square root of 858402 is about 926.4998650836. The cubic root of 858402 is about 95.0379165360.

The spelling of 858402 in words is "eight hundred fifty-eight thousand, four hundred two".