23920143 has 8 divisors (see below), whose sum is σ = 34346928. Its totient is φ = 14720064.

The previous prime is 23920121. The next prime is 23920147. The reversal of 23920143 is 34102932.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 23920143 - 2⁶ = 23920079 is a prime.

It is a super-2 number, since 2×23920143² = 1144346482280898, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23920147) 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, 306630 + ... + 306707.

It is an arithmetic number, because the mean of its divisors is an integer number (4293366).

Almost surely, 2^23920143 is an apocalyptic number.

23920143 is a deficient number, since it is larger than the sum of its proper divisors (10426785).

23920143 is a wasteful number, since it uses less digits than its factorization.

23920143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 613353.

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 23920143 is about 4890.8223234953. The cubic root of 23920143 is about 288.1296315541.

The spelling of 23920143 in words is "twenty-three million, nine hundred twenty thousand, one hundred forty-three".