816402 has 8 divisors (see below), whose sum is σ = 1632816. Its totient is φ = 272132.

The previous prime is 816401. The next prime is 816427. The reversal of 816402 is 204618.

It is a sphenic number, since it is the product of 3 distinct primes.

816402 is an admirable number.

It is a plaindrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (816401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68028 + ... + 68039.

It is an arithmetic number, because the mean of its divisors is an integer number (204102).

2⁸¹⁶⁴⁰² is an apocalyptic number.

816402 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.

816402 is a wasteful number, since it uses less digits than its factorization.

816402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136072.

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 816402 is about 903.5496665928. The cubic root of 816402 is about 93.4619174412.

The spelling of 816402 in words is "eight hundred sixteen thousand, four hundred two".