22212064 has 96 divisors (see below), whose sum is σ = 55883520. Its totient is φ = 8460288.

The previous prime is 22212049. The next prime is 22212077. The reversal of 22212064 is 46021222.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 72199 + ... + 72505.

It is an arithmetic number, because the mean of its divisors is an integer number (582120).

Almost surely, 2^22212064 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22212064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27941760).

22212064 is an abundant number, since it is smaller than the sum of its proper divisors (33671456).

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

22212064 is a wasteful number, since it uses less digits than its factorization.

22212064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360 (or 352 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 22212064 is about 4712.9676425794. The cubic root of 22212064 is about 281.1013763559.

Adding to 22212064 its reverse (46021222), we get a palindrome (68233286).

The spelling of 22212064 in words is "twenty-two million, two hundred twelve thousand, sixty-four".