22051716 has 24 divisors (see below), whose sum is σ = 53229120. Its totient is φ = 7096992.

The previous prime is 22051709. The next prime is 22051717. The reversal of 22051716 is 61715022.

It is not an unprimeable number, because it can be changed into a prime (22051717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31336 + ... + 32031.

It is an arithmetic number, because the mean of its divisors is an integer number (2217880).

Almost surely, 2^22051716 is an apocalyptic number.

It is an amenable number.

22051716 is an abundant number, since it is smaller than the sum of its proper divisors (31177404).

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

22051716 is a wasteful number, since it uses less digits than its factorization.

22051716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63403 (or 63401 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 24.

The square root of 22051716 is about 4695.9254678924. The cubic root of 22051716 is about 280.4233222563.

Adding to 22051716 its reverse (61715022), we get a palindrome (83766738).

The spelling of 22051716 in words is "twenty-two million, fifty-one thousand, seven hundred sixteen".