23749143 has 8 divisors (see below), whose sum is σ = 34544256. Its totient is φ = 14393400.

The previous prime is 23749139. The next prime is 23749157. The reversal of 23749143 is 34194732.

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

It is not a de Polignac number, because 23749143 - 2² = 23749139 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 719671 = 23749143 / (2 + 3 + 7 + 4 + 9 + 1 + 4 + 3).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23749043) 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, 359803 + ... + 359868.

It is an arithmetic number, because the mean of its divisors is an integer number (4318032).

Almost surely, 2^23749143 is an apocalyptic number.

23749143 is a deficient number, since it is larger than the sum of its proper divisors (10795113).

23749143 is a wasteful number, since it uses less digits than its factorization.

23749143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 719685.

The product of its digits is 18144, while the sum is 33.

The square root of 23749143 is about 4873.3092452665. The cubic root of 23749143 is about 287.4413964988.

The spelling of 23749143 in words is "twenty-three million, seven hundred forty-nine thousand, one hundred forty-three".