16440568 has 8 divisors (see below), whose sum is σ = 30826080. Its totient is φ = 8220280.

The previous prime is 16440563. The next prime is 16440583. The reversal of 16440568 is 86504461.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-3 number, since 3×16440568³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16440563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1027528 + ... + 1027543.

It is an arithmetic number, because the mean of its divisors is an integer number (3853260).

Almost surely, 2^16440568 is an apocalyptic number.

It is an amenable number.

16440568 is a deficient number, since it is larger than the sum of its proper divisors (14385512).

16440568 is a wasteful number, since it uses less digits than its factorization.

16440568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2055077 (or 2055073 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 16440568 is about 4054.6970293722. The cubic root of 16440568 is about 254.2761375729.

The spelling of 16440568 in words is "sixteen million, four hundred forty thousand, five hundred sixty-eight".