22158143 has 8 divisors (see below), whose sum is σ = 25840800. Its totient is φ = 18992400.

The previous prime is 22158121. The next prime is 22158229. The reversal of 22158143 is 34185122.

It is not a de Polignac number, because 22158143 - 2¹⁴ = 22141759 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22158043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31958 + ... + 32643.

It is an arithmetic number, because the mean of its divisors is an integer number (3230100).

Almost surely, 2^22158143 is an apocalyptic number.

22158143 is a deficient number, since it is larger than the sum of its proper divisors (3682657).

22158143 is an frugal number, since it uses more digits than its factorization.

22158143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64622 (or 64608 counting only the distinct ones).

The product of its digits is 1920, while the sum is 26.

The square root of 22158143 is about 4707.2436733188. The cubic root of 22158143 is about 280.8737290600.

The spelling of 22158143 in words is "twenty-two million, one hundred fifty-eight thousand, one hundred forty-three".