16421322 has 16 divisors (see below), whose sum is σ = 33381792. Its totient is φ = 5383920.

The previous prime is 16421299. The next prime is 16421323. The reversal of 16421322 is 22312461.

It is not an unprimeable number, because it can be changed into a prime (16421323) 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, 22068 + ... + 22799.

It is an arithmetic number, because the mean of its divisors is an integer number (2086362).

Almost surely, 2^16421322 is an apocalyptic number.

16421322 is an abundant number, since it is smaller than the sum of its proper divisors (16960470).

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

16421322 is a wasteful number, since it uses less digits than its factorization.

16421322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44933.

The product of its digits is 576, while the sum is 21.

The square root of 16421322 is about 4052.3230374688. The cubic root of 16421322 is about 254.1768768212.

Adding to 16421322 its reverse (22312461), we get a palindrome (38733783).

The spelling of 16421322 in words is "sixteen million, four hundred twenty-one thousand, three hundred twenty-two".