16220402 has 8 divisors (see below), whose sum is σ = 26542512. Its totient is φ = 7372900.

The previous prime is 16220401. The next prime is 16220411. The reversal of 16220402 is 20402261.

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

It is a zygodrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (16220401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 368624 + ... + 368667.

It is an arithmetic number, because the mean of its divisors is an integer number (3317814).

Almost surely, 2^16220402 is an apocalyptic number.

16220402 is a deficient number, since it is larger than the sum of its proper divisors (10322110).

16220402 is a wasteful number, since it uses less digits than its factorization.

16220402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 737304.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 16220402 is about 4027.4560208648. The cubic root of 16220402 is about 253.1359754830.

Adding to 16220402 its reverse (20402261), we get a palindrome (36622663).

It can be divided in two parts, 162 and 20402, that multiplied together give a square (3305124 = 1818²).

The spelling of 16220402 in words is "sixteen million, two hundred twenty thousand, four hundred two".