22220316 has 18 divisors (see below), whose sum is σ = 56168112. Its totient is φ = 7406760.

The previous prime is 22220299. The next prime is 22220321. The reversal of 22220316 is 61302222.

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-3 number, since 3×22220316³ (a number of 23 digits) contains 333 as substring.

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

It is a congruent number.

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, 308580 + ... + 308651.

Almost surely, 2^22220316 is an apocalyptic number.

It is an amenable number.

22220316 is an abundant number, since it is smaller than the sum of its proper divisors (33947796).

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

22220316 is a wasteful number, since it uses less digits than its factorization.

22220316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 617241 (or 617236 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 22220316 is about 4713.8430181753. The cubic root of 22220316 is about 281.1361826869.

Adding to 22220316 its reverse (61302222), we get a palindrome (83522538).

The spelling of 22220316 in words is "twenty-two million, two hundred twenty thousand, three hundred sixteen".