16220602 has 4 divisors (see below), whose sum is σ = 24330906. Its totient is φ = 8110300.

The previous prime is 16220563. The next prime is 16220609. The reversal of 16220602 is 20602261.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 14584761 + 1635841 = 3819^2 + 1279^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 16220602.

It is not an unprimeable number, because it can be changed into a prime (16220609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4055149 + ... + 4055152.

Almost surely, 2^16220602 is an apocalyptic number.

16220602 is a deficient number, since it is larger than the sum of its proper divisors (8110304).

16220602 is an equidigital number, since it uses as much as digits as its factorization.

16220602 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8110303.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 16220602 is about 4027.4808503580. The cubic root of 16220602 is about 253.1370158803.

Adding to 16220602 its reverse (20602261), we get a palindrome (36822863).

The spelling of 16220602 in words is "sixteen million, two hundred twenty thousand, six hundred two".