16144445 has 8 divisors (see below), whose sum is σ = 20041560. Its totient is φ = 12470080.

The previous prime is 16144417. The next prime is 16144451. The reversal of 16144445 is 54444161.

It can be written as a sum of positive squares in 4 ways, for example, as 121 + 16144324 = 11^2 + 4018^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 16144445 - 2¹⁴ = 16128061 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55526 + ... + 55815.

It is an arithmetic number, because the mean of its divisors is an integer number (2505195).

Almost surely, 2^16144445 is an apocalyptic number.

It is an amenable number.

16144445 is a deficient number, since it is larger than the sum of its proper divisors (3897115).

16144445 is a wasteful number, since it uses less digits than its factorization.

16144445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111375.

The product of its digits is 7680, while the sum is 29.

The square root of 16144445 is about 4018.0150572142. The cubic root of 16144445 is about 252.7402281927.

The spelling of 16144445 in words is "sixteen million, one hundred forty-four thousand, four hundred forty-five".