23143738 has 8 divisors (see below), whose sum is σ = 35105940. Its totient is φ = 11441760.

The previous prime is 23143717. The next prime is 23143741. The reversal of 23143738 is 83734132.

It can be written as a sum of positive squares in 2 ways, for example, as 17867529 + 5276209 = 4227^2 + 2297^2 .

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

It is a super-2 number, since 2×23143738² = 1071265217225288, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64833 + ... + 65188.

Almost surely, 2^23143738 is an apocalyptic number.

23143738 is a deficient number, since it is larger than the sum of its proper divisors (11962202).

23143738 is a wasteful number, since it uses less digits than its factorization.

23143738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130112.

The product of its digits is 12096, while the sum is 31.

The square root of 23143738 is about 4810.7939053757. The cubic root of 23143738 is about 284.9778909699.

The spelling of 23143738 in words is "twenty-three million, one hundred forty-three thousand, seven hundred thirty-eight".