22272064 has 14 divisors (see below), whose sum is σ = 44196254. Its totient is φ = 11136000.

The previous prime is 22272059. The next prime is 22272071. The reversal of 22272064 is 46027222.

It can be written as a sum of positive squares in only one way, i.e., 21902400 + 369664 = 4680^2 + 608^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 173937 + ... + 174064.

Almost surely, 2^22272064 is an apocalyptic number.

It is an amenable number.

22272064 is a deficient number, since it is larger than the sum of its proper divisors (21924190).

22272064 is an equidigital number, since it uses as much as digits as its factorization.

22272064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348013 (or 348003 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 22272064 is about 4719.3287658310. The cubic root of 22272064 is about 281.3542557358.

Adding to 22272064 its reverse (46027222), we get a palindrome (68299286).

It can be divided in two parts, 222720 and 64, that added together give a square (222784 = 472²).

The spelling of 22272064 in words is "twenty-two million, two hundred seventy-two thousand, sixty-four".