22645330 has 32 divisors (see below), whose sum is σ = 42027264. Its totient is φ = 8781696.

The previous prime is 22645327. The next prime is 22645333. The reversal of 22645330 is 3354622.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (22645327) and next prime (22645333).

It is a junction number, because it is equal to n+sod(n) for n = 22645295 and 22645304.

It is not an unprimeable number, because it can be changed into a prime (22645333) 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 in 15 ways as a sum of consecutive naturals, for example, 48679 + ... + 49141.

It is an arithmetic number, because the mean of its divisors is an integer number (1313352).

Almost surely, 2^22645330 is an apocalyptic number.

22645330 is a deficient number, since it is larger than the sum of its proper divisors (19381934).

22645330 is a wasteful number, since it uses less digits than its factorization.

22645330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 610.

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 22645330 is about 4758.7109599134. The cubic root of 22645330 is about 282.9173302961.

Adding to 22645330 its reverse (3354622), we get a palindrome (25999952).

The spelling of 22645330 in words is "twenty-two million, six hundred forty-five thousand, three hundred thirty".