16223040 has 168 divisors, whose sum is σ = 57534048. Its totient is φ = 4193280.

The previous prime is 16223033. The next prime is 16223041. The reversal of 16223040 is 4032261.

It is a happy number.

16223040 is a `hidden beast` number, since 1 + 622 + 3 + 0 + 40 = 666.

16223040 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16223041) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 123775 + ... + 123905.

Almost surely, 2^16223040 is an apocalyptic number.

16223040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16223040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28767024).

16223040 is an abundant number, since it is smaller than the sum of its proper divisors (41311008).

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

16223040 is a wasteful number, since it uses less digits than its factorization.

16223040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197 (or 184 counting only the distinct ones).

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

The square root of 16223040 is about 4027.7835095745. The cubic root of 16223040 is about 253.1496976359.

The spelling of 16223040 in words is "sixteen million, two hundred twenty-three thousand, forty".