22513028 has 6 divisors (see below), whose sum is σ = 39397806. Its totient is φ = 11256512.

The previous prime is 22513027. The next prime is 22513033. The reversal of 22513028 is 82031522.

It can be written as a sum of positive squares in only one way, i.e., 14684224 + 7828804 = 3832^2 + 2798^2 .

It is a junction number, because it is equal to n+sod(n) for n = 22512994 and 22513012.

It is not an unprimeable number, because it can be changed into a prime (22513027) by changing a digit.

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 as a sum of consecutive naturals, namely, 2814125 + ... + 2814132.

It is an arithmetic number, because the mean of its divisors is an integer number (6566301).

Almost surely, 2^22513028 is an apocalyptic number.

It is an amenable number.

22513028 is a deficient number, since it is larger than the sum of its proper divisors (16884778).

22513028 is a wasteful number, since it uses less digits than its factorization.

22513028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5628261 (or 5628259 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 22513028 is about 4744.7895632999. The cubic root of 22513028 is about 282.3652862284.

The spelling of 22513028 in words is "twenty-two million, five hundred thirteen thousand, twenty-eight".