16223706 has 16 divisors (see below), whose sum is σ = 36052800. Its totient is φ = 5407884.

The previous prime is 16223693. The next prime is 16223707. The reversal of 16223706 is 60732261.

It is a happy number.

16223706 is a `hidden beast` number, since 1 + 622 + 37 + 0 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 16223706.

It is not an unprimeable number, because it can be changed into a prime (16223707) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 150166 + ... + 150273.

It is an arithmetic number, because the mean of its divisors is an integer number (2253300).

Almost surely, 2^16223706 is an apocalyptic number.

16223706 is an abundant number, since it is smaller than the sum of its proper divisors (19829094).

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

16223706 is a wasteful number, since it uses less digits than its factorization.

16223706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300450 (or 300444 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 16223706 is about 4027.8661844704. The cubic root of 16223706 is about 253.1531617501.

Adding to 16223706 its reverse (60732261), we get a palindrome (76955967).

The spelling of 16223706 in words is "sixteen million, two hundred twenty-three thousand, seven hundred six".