16402 has 8 divisors (see below), whose sum is σ = 25200.
Its totient is φ = 8004.
The previous prime is 16381. The next prime is 16411. The reversal of 16402 is 20461.
Adding to 16402 its reverse (20461), we get a palindrome (36863).
It is a sphenic number, since it is the product of 3 distinct primes.
It is a plaindrome in base 9.
It is a nialpdrome in base 3 and base 7.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (3) of ones.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49 + ... + 187.
It is an arithmetic number, because the mean of its divisors is an integer number (3150).
216402 is an apocalyptic number.
16402 is a deficient number, since it is larger than the sum of its proper divisors (8798).
16402 is a wasteful number, since it uses less digits than its factorization.
16402 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 200.
The product of its (nonzero) digits is 48, while the sum is 13.
The square root of 16402 is about 128.0702931987.
The cubic root of 16402 is about 25.4077146054.
The spelling of 16402 in words is "sixteen thousand, four hundred two".