22050216 has 24 divisors (see below), whose sum is σ = 59719530. Its totient is φ = 7350048.

The previous prime is 22050209. The next prime is 22050221. The reversal of 22050216 is 61205022.

It can be written as a sum of positive squares in only one way, i.e., 21622500 + 427716 = 4650^2 + 654^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 153055 + ... + 153198.

Almost surely, 2^22050216 is an apocalyptic number.

It is an amenable number.

22050216 is an abundant number, since it is smaller than the sum of its proper divisors (37669314).

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

22050216 is a wasteful number, since it uses less digits than its factorization.

22050216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306265 (or 306258 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 22050216 is about 4695.7657522496. The cubic root of 22050216 is about 280.4169638015.

Adding to 22050216 its reverse (61205022), we get a palindrome (83255238).

The spelling of 22050216 in words is "twenty-two million, fifty thousand, two hundred sixteen".