22143952 has 20 divisors (see below), whose sum is σ = 43070656. Its totient is φ = 11028960.

The previous prime is 22143943. The next prime is 22143959. The reversal of 22143952 is 25934122.

It is a super-2 number, since 2×22143952² = 980709220356608, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22143952.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22143959) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1783 + ... + 6889.

Almost surely, 2^22143952 is an apocalyptic number.

It is an amenable number.

22143952 is a deficient number, since it is larger than the sum of its proper divisors (20926704).

22143952 is a wasteful number, since it uses less digits than its factorization.

22143952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5386 (or 5380 counting only the distinct ones).

The product of its digits is 4320, while the sum is 28.

The square root of 22143952 is about 4705.7360741971. The cubic root of 22143952 is about 280.8137551669.

The spelling of 22143952 in words is "twenty-two million, one hundred forty-three thousand, nine hundred fifty-two".