22225928 has 8 divisors (see below), whose sum is σ = 41673630. Its totient is φ = 11112960.

The previous prime is 22225927. The next prime is 22225963. The reversal of 22225928 is 82952222.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 19909444 + 2316484 = 4462^2 + 1522^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×22225928² = 987983750922368, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22225894 and 22225903.

It is not an unprimeable number, because it can be changed into a prime (22225927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1389113 + ... + 1389128.

Almost surely, 2^22225928 is an apocalyptic number.

It is an amenable number.

22225928 is a deficient number, since it is larger than the sum of its proper divisors (19447702).

22225928 is a wasteful number, since it uses less digits than its factorization.

22225928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2778247 (or 2778243 counting only the distinct ones).

The product of its digits is 11520, while the sum is 32.

The square root of 22225928 is about 4714.4382486146. The cubic root of 22225928 is about 281.1598487688.

The spelling of 22225928 in words is "twenty-two million, two hundred twenty-five thousand, nine hundred twenty-eight".