16443427 has 16 divisors (see below), whose sum is σ = 22079232. Its totient is φ = 11826720.

The previous prime is 16443397. The next prime is 16443431. The reversal of 16443427 is 72434461.

It is a cyclic number.

It is not a de Polignac number, because 16443427 - 2¹¹ = 16441379 is a prime.

It is a super-3 number, since 3×16443427³ (a number of 23 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (16443457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7213 + ... + 9214.

It is an arithmetic number, because the mean of its divisors is an integer number (1379952).

Almost surely, 2^16443427 is an apocalyptic number.

16443427 is a deficient number, since it is larger than the sum of its proper divisors (5635805).

16443427 is a wasteful number, since it uses less digits than its factorization.

16443427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16458.

The product of its digits is 16128, while the sum is 31.

The square root of 16443427 is about 4055.0495681311. The cubic root of 16443427 is about 254.2908761825.

Adding to 16443427 its reverse (72434461), we get a palindrome (88877888).

It can be divided in two parts, 164434 and 27, that added together give a palindrome (164461).

The spelling of 16443427 in words is "sixteen million, four hundred forty-three thousand, four hundred twenty-seven".