22743156 has 12 divisors (see below), whose sum is σ = 53067392. Its totient is φ = 7581048.

The previous prime is 22743139. The next prime is 22743157. The reversal of 22743156 is 65134722.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×22743156² = 1034502289680672, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22743157) 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 in 3 ways as a sum of consecutive naturals, for example, 947620 + ... + 947643.

Almost surely, 2^22743156 is an apocalyptic number.

It is an amenable number.

22743156 is an abundant number, since it is smaller than the sum of its proper divisors (30324236).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22743156 is a wasteful number, since it uses less digits than its factorization.

22743156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1895270 (or 1895268 counting only the distinct ones).

The product of its digits is 10080, while the sum is 30.

The square root of 22743156 is about 4768.9785069761. The cubic root of 22743156 is about 283.3241384175.

Adding to 22743156 its reverse (65134722), we get a palindrome (87877878).

The spelling of 22743156 in words is "twenty-two million, seven hundred forty-three thousand, one hundred fifty-six".