810402 has 16 divisors (see below), whose sum is σ = 1673472. Its totient is φ = 261360.

The previous prime is 810401. The next prime is 810409. The reversal of 810402 is 204018.

810402 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (810401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1993 + ... + 2364.

It is an arithmetic number, because the mean of its divisors is an integer number (104592).

2⁸¹⁰⁴⁰² is an apocalyptic number.

810402 is an abundant number, since it is smaller than the sum of its proper divisors (863070).

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

810402 is a wasteful number, since it uses less digits than its factorization.

810402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4393.

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 810402 is about 900.2233056303. The cubic root of 810402 is about 93.2323937080.

The spelling of 810402 in words is "eight hundred ten thousand, four hundred two".