16222320 has 60 divisors (see below), whose sum is σ = 54482376. Its totient is φ = 4325760.

The previous prime is 16222319. The next prime is 16222321. The reversal of 16222320 is 2322261.

16222320 is a `hidden beast` number, since 1 + 622 + 23 + 20 = 666.

16222320 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (16222319) and next prime (16222321).

It is a tau number, because it is divible by the number of its divisors (60).

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

It is a junction number, because it is equal to n+sod(n) for n = 16222293 and 16222302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16222321) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10546 + ... + 11985.

Almost surely, 2^16222320 is an apocalyptic number.

16222320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16222320 is an abundant number, since it is smaller than the sum of its proper divisors (38260056).

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

16222320 is a wasteful number, since it uses less digits than its factorization.

16222320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22550 (or 22541 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 16222320 is about 4027.6941293996. The cubic root of 16222320 is about 253.1459525409.

Adding to 16222320 its reverse (2322261), we get a palindrome (18544581).

The spelling of 16222320 in words is "sixteen million, two hundred twenty-two thousand, three hundred twenty".