23780043 has 18 divisors (see below), whose sum is σ = 39957684. Its totient is φ = 13588344.

The previous prime is 23780021. The next prime is 23780063. The reversal of 23780043 is 34008732.

It is not a de Polignac number, because 23780043 - 2¹⁴ = 23763659 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23779989 and 23780016.

It is not an unprimeable number, because it can be changed into a prime (23780063) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 26521 + ... + 27402.

Almost surely, 2^23780043 is an apocalyptic number.

23780043 is a deficient number, since it is larger than the sum of its proper divisors (16177641).

23780043 is a wasteful number, since it uses less digits than its factorization.

23780043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53943 (or 53933 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 23780043 is about 4876.4785450159. The cubic root of 23780043 is about 287.5660057649.

Adding to 23780043 its reverse (34008732), we get a palindrome (57788775).

The spelling of 23780043 in words is "twenty-three million, seven hundred eighty thousand, forty-three".