22152236 has 6 divisors (see below), whose sum is σ = 38766420. Its totient is φ = 11076116.

The previous prime is 22152223. The next prime is 22152239. The reversal of 22152236 is 63225122.

It is not an unprimeable number, because it can be changed into a prime (22152239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2769026 + ... + 2769033.

It is an arithmetic number, because the mean of its divisors is an integer number (6461070).

Almost surely, 2^22152236 is an apocalyptic number.

It is an amenable number.

22152236 is a deficient number, since it is larger than the sum of its proper divisors (16614184).

22152236 is a wasteful number, since it uses less digits than its factorization.

22152236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5538063 (or 5538061 counting only the distinct ones).

The product of its digits is 1440, while the sum is 23.

The square root of 22152236 is about 4706.6161942525. The cubic root of 22152236 is about 280.8487680548.

Adding to 22152236 its reverse (63225122), we get a palindrome (85377358).

The spelling of 22152236 in words is "twenty-two million, one hundred fifty-two thousand, two hundred thirty-six".