16442406 has 16 divisors (see below), whose sum is σ = 36538800. Its totient is φ = 5480784.

The previous prime is 16442399. The next prime is 16442407. The reversal of 16442406 is 60424461.

It is a super-3 number, since 3×16442406³ (a number of 23 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 16442406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16442407) 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 7 ways as a sum of consecutive naturals, for example, 152191 + ... + 152298.

It is an arithmetic number, because the mean of its divisors is an integer number (2283675).

Almost surely, 2^16442406 is an apocalyptic number.

16442406 is an abundant number, since it is smaller than the sum of its proper divisors (20096394).

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

16442406 is a wasteful number, since it uses less digits than its factorization.

16442406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304500 (or 304494 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 16442406 is about 4054.9236737576. The cubic root of 16442406 is about 254.2856129577.

Adding to 16442406 its reverse (60424461), we get a palindrome (76866867).

The spelling of 16442406 in words is "sixteen million, four hundred forty-two thousand, four hundred six".