22920143 has 4 divisors (see below), whose sum is σ = 23308680. Its totient is φ = 22531608.

The previous prime is 22920133. The next prime is 22920151. The reversal of 22920143 is 34102922.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22920143 - 2¹⁰ = 22919119 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 (22920113) 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, 194180 + ... + 194297.

It is an arithmetic number, because the mean of its divisors is an integer number (5827170).

Almost surely, 2^22920143 is an apocalyptic number.

22920143 is a deficient number, since it is larger than the sum of its proper divisors (388537).

22920143 is an equidigital number, since it uses as much as digits as its factorization.

22920143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388536.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 22920143 is about 4787.4986161878. The cubic root of 22920143 is about 284.0571819991.

The spelling of 22920143 in words is "twenty-two million, nine hundred twenty thousand, one hundred forty-three".