16631322 has 16 divisors (see below), whose sum is σ = 34074432. Its totient is φ = 5408480.

The previous prime is 16631311. The next prime is 16631399. The reversal of 16631322 is 22313661.

It is a happy number.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 16631292 and 16631301.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33558 + ... + 34049.

It is an arithmetic number, because the mean of its divisors is an integer number (2129652).

Almost surely, 2^16631322 is an apocalyptic number.

16631322 is an abundant number, since it is smaller than the sum of its proper divisors (17443110).

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

16631322 is a wasteful number, since it uses less digits than its factorization.

16631322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67653.

The product of its digits is 1296, while the sum is 24.

The square root of 16631322 is about 4078.1517872683. The cubic root of 16631322 is about 255.2557833298.

Adding to 16631322 its reverse (22313661), we get a palindrome (38944983).

The spelling of 16631322 in words is "sixteen million, six hundred thirty-one thousand, three hundred twenty-two".