23897447 has 6 divisors (see below), whose sum is σ = 27799128. Its totient is φ = 20483484.

The previous prime is 23897417. The next prime is 23897477. The reversal of 23897447 is 74479832.

It is an interprime number because it is at equal distance from previous prime (23897417) and next prime (23897477).

It is not a de Polignac number, because 23897447 - 2⁸ = 23897191 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23897398 and 23897407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23897407) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 243803 + ... + 243900.

It is an arithmetic number, because the mean of its divisors is an integer number (4633188).

Almost surely, 2^23897447 is an apocalyptic number.

23897447 is a deficient number, since it is larger than the sum of its proper divisors (3901681).

23897447 is an equidigital number, since it uses as much as digits as its factorization.

23897447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487717 (or 487710 counting only the distinct ones).

The product of its digits is 338688, while the sum is 44.

The square root of 23897447 is about 4888.5015086425. The cubic root of 23897447 is about 288.0384746374.

The spelling of 23897447 in words is "twenty-three million, eight hundred ninety-seven thousand, four hundred forty-seven".