22143652 has 6 divisors (see below), whose sum is σ = 38751398. Its totient is φ = 11071824.

The previous prime is 22143637. The next prime is 22143689. The reversal of 22143652 is 25634122.

It can be written as a sum of positive squares in only one way, i.e., 17842176 + 4301476 = 4224^2 + 2074^2 .

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 as a sum of consecutive naturals, namely, 2767953 + ... + 2767960.

Almost surely, 2^22143652 is an apocalyptic number.

It is an amenable number.

22143652 is a deficient number, since it is larger than the sum of its proper divisors (16607746).

22143652 is a wasteful number, since it uses less digits than its factorization.

22143652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5535917 (or 5535915 counting only the distinct ones).

The product of its digits is 2880, while the sum is 25.

The square root of 22143652 is about 4705.7041980983. The cubic root of 22143652 is about 280.8124870327.

Adding to 22143652 its reverse (25634122), we get a palindrome (47777774).

The spelling of 22143652 in words is "twenty-two million, one hundred forty-three thousand, six hundred fifty-two".