22450215 has 16 divisors (see below), whose sum is σ = 36152928. Its totient is φ = 11895936.

The previous prime is 22450199. The next prime is 22450273. The reversal of 22450215 is 51205422.

It is a happy number.

It is not a de Polignac number, because 22450215 - 2⁴ = 22450199 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22450191 and 22450200.

It is a congruent number.

It is an unprimeable number.

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, 2412 + ... + 7121.

It is an arithmetic number, because the mean of its divisors is an integer number (2259558).

Almost surely, 2^22450215 is an apocalyptic number.

22450215 is a deficient number, since it is larger than the sum of its proper divisors (13702713).

22450215 is a wasteful number, since it uses less digits than its factorization.

22450215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9698.

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 22450215 is about 4738.1657843516. The cubic root of 22450215 is about 282.1024349962.

Adding to 22450215 its reverse (51205422), we get a palindrome (73655637).

The spelling of 22450215 in words is "twenty-two million, four hundred fifty thousand, two hundred fifteen".