23857047 has 6 divisors (see below), whose sum is σ = 34460192. Its totient is φ = 15904692.

The previous prime is 23857037. The next prime is 23857051. The reversal of 23857047 is 74075832.

It is not a de Polignac number, because 23857047 - 2⁷ = 23856919 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 (23857037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1325383 + ... + 1325400.

Almost surely, 2^23857047 is an apocalyptic number.

23857047 is a deficient number, since it is larger than the sum of its proper divisors (10603145).

23857047 is a wasteful number, since it uses less digits than its factorization.

23857047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2650789 (or 2650786 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 36.

The square root of 23857047 is about 4884.3676151576. The cubic root of 23857047 is about 287.8760679157.

The spelling of 23857047 in words is "twenty-three million, eight hundred fifty-seven thousand, forty-seven".