16442222 has 4 divisors (see below), whose sum is σ = 24663336. Its totient is φ = 8221110.

The previous prime is 16442197. The next prime is 16442287. The reversal of 16442222 is 22224461.

It is a semiprime because it is the product of two primes.

It is a super-3 number, since 3×16442222³ (a number of 23 digits) contains 333 as substring.

16442222 is a modest number, since divided by 2222 gives 1644 as remainder.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4110554 + ... + 4110557.

It is an arithmetic number, because the mean of its divisors is an integer number (6165834).

Almost surely, 2^16442222 is an apocalyptic number.

16442222 is a deficient number, since it is larger than the sum of its proper divisors (8221114).

16442222 is an equidigital number, since it uses as much as digits as its factorization.

16442222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8221113.

The product of its digits is 1536, while the sum is 23.

The square root of 16442222 is about 4054.9009852276. The cubic root of 16442222 is about 254.2846644200.

Adding to 16442222 its sum of digits (23), we get a triangular number (16442245 = T₅₇₃₄).

Adding to 16442222 its reverse (22224461), we get a palindrome (38666683).

The spelling of 16442222 in words is "sixteen million, four hundred forty-two thousand, two hundred twenty-two".