856402 has 16 divisors (see below), whose sum is σ = 1346112. Its totient is φ = 408240.

The previous prime is 856393. The next prime is 856411. The reversal of 856402 is 204658.

It is an interprime number because it is at equal distance from previous prime (856393) and next prime (856411).

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, 5173 + ... + 5335.

It is an arithmetic number, because the mean of its divisors is an integer number (84132).

2⁸⁵⁶⁴⁰² is an apocalyptic number.

856402 is a deficient number, since it is larger than the sum of its proper divisors (489710).

856402 is a wasteful number, since it uses less digits than its factorization.

856402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 856402 is about 925.4199046919. The cubic root of 856402 is about 94.9640491854.

The spelling of 856402 in words is "eight hundred fifty-six thousand, four hundred two".