22207028 has 6 divisors (see below), whose sum is σ = 38862306. Its totient is φ = 11103512.

The previous prime is 22207027. The next prime is 22207043. The reversal of 22207028 is 82070222.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 19963024 + 2244004 = 4468^2 + 1498^2 .

It is a junction number, because it is equal to n+sod(n) for n = 22206994 and 22207012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22207021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2775875 + ... + 2775882.

It is an arithmetic number, because the mean of its divisors is an integer number (6477051).

Almost surely, 2^22207028 is an apocalyptic number.

It is an amenable number.

22207028 is a deficient number, since it is larger than the sum of its proper divisors (16655278).

22207028 is a wasteful number, since it uses less digits than its factorization.

22207028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5551761 (or 5551759 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 23.

The square root of 22207028 is about 4712.4333417036. The cubic root of 22207028 is about 281.0801306411.

The spelling of 22207028 in words is "twenty-two million, two hundred seven thousand, twenty-eight".