22140232 has 8 divisors (see below), whose sum is σ = 41512950. Its totient is φ = 11070112.

The previous prime is 22140221. The next prime is 22140233. The reversal of 22140232 is 23204122.

It can be written as a sum of positive squares in only one way, i.e., 14333796 + 7806436 = 3786^2 + 2794^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-4 number, since 4×22140232⁴ (a number of 30 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (22140233) 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 as a sum of consecutive naturals, namely, 1383757 + ... + 1383772.

Almost surely, 2^22140232 is an apocalyptic number.

It is an amenable number.

22140232 is a deficient number, since it is larger than the sum of its proper divisors (19372718).

22140232 is a wasteful number, since it uses less digits than its factorization.

22140232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2767535 (or 2767531 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 22140232 is about 4705.3407953091. The cubic root of 22140232 is about 280.7980294935.

Adding to 22140232 its reverse (23204122), we get a palindrome (45344354).

The spelling of 22140232 in words is "twenty-two million, one hundred forty thousand, two hundred thirty-two".