16220502 has 48 divisors (see below), whose sum is σ = 37215360. Its totient is φ = 5097600.

The previous prime is 16220489. The next prime is 16220513. The reversal of 16220502 is 20502261.

16220502 is a `hidden beast` number, since 162 + 2 + 0 + 502 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 22524 + ... + 23232.

It is an arithmetic number, because the mean of its divisors is an integer number (775320).

Almost surely, 2^16220502 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16220502, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18607680).

16220502 is an abundant number, since it is smaller than the sum of its proper divisors (20994858).

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

16220502 is a wasteful number, since it uses less digits than its factorization.

16220502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 789 (or 786 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 16220502 is about 4027.4684356305. The cubic root of 16220502 is about 253.1364956828.

Adding to 16220502 its reverse (20502261), we get a palindrome (36722763).

The spelling of 16220502 in words is "sixteen million, two hundred twenty thousand, five hundred two".