16442536 has 64 divisors (see below), whose sum is σ = 36936000. Its totient is φ = 6773760.

The previous prime is 16442521. The next prime is 16442609. The reversal of 16442536 is 63524461.

It is a super-3 number, since 3×16442536³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 16442498 and 16442507.

It is an unprimeable number.

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, 43195 + ... + 43573.

It is an arithmetic number, because the mean of its divisors is an integer number (577125).

Almost surely, 2^16442536 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16442536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18468000).

16442536 is an abundant number, since it is smaller than the sum of its proper divisors (20493464).

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

16442536 is a wasteful number, since it uses less digits than its factorization.

16442536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442 (or 438 counting only the distinct ones).

The product of its digits is 17280, while the sum is 31.

The square root of 16442536 is about 4054.9397036208. The cubic root of 16442536 is about 254.2862831159.

Adding to 16442536 its reverse (63524461), we get a palindrome (79966997).

It can be divided in two parts, 164425 and 36, that added together give a palindrome (164461).

The spelling of 16442536 in words is "sixteen million, four hundred forty-two thousand, five hundred thirty-six".