16144401 has 24 divisors (see below), whose sum is σ = 26644800. Its totient is φ = 8513856.

The previous prime is 16144399. The next prime is 16144417. The reversal of 16144401 is 10444161.

It is not a de Polignac number, because 16144401 - 2¹ = 16144399 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (16144451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1275 + ... + 5823.

It is an arithmetic number, because the mean of its divisors is an integer number (1110200).

Almost surely, 2^16144401 is an apocalyptic number.

It is an amenable number.

16144401 is a deficient number, since it is larger than the sum of its proper divisors (10500399).

16144401 is a wasteful number, since it uses less digits than its factorization.

16144401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4585 (or 4572 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 16144401 is about 4018.0095818701. The cubic root of 16144401 is about 252.7399985868.

Adding to 16144401 its reverse (10444161), we get a palindrome (26588562).

The spelling of 16144401 in words is "sixteen million, one hundred forty-four thousand, four hundred one".