22252402 has 8 divisors (see below), whose sum is σ = 33410412. Its totient is φ = 11115600.

The previous prime is 22252397. The next prime is 22252409. The reversal of 22252402 is 20425222.

It can be written as a sum of positive squares in 2 ways, for example, as 21706281 + 546121 = 4659^2 + 739^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 22252402.

It is not an unprimeable number, because it can be changed into a prime (22252409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2349 + ... + 7072.

Almost surely, 2^22252402 is an apocalyptic number.

22252402 is a deficient number, since it is larger than the sum of its proper divisors (11158010).

22252402 is a wasteful number, since it uses less digits than its factorization.

22252402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10604.

The product of its (nonzero) digits is 640, while the sum is 19.

The square root of 22252402 is about 4717.2451706478. The cubic root of 22252402 is about 281.2714372466.

Adding to 22252402 its reverse (20425222), we get a palindrome (42677624).

The spelling of 22252402 in words is "twenty-two million, two hundred fifty-two thousand, four hundred two".