23728147 has 2 divisors, whose sum is σ = 23728148. Its totient is φ = 23728146.

The previous prime is 23728109. The next prime is 23728151. The reversal of 23728147 is 74182732.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23728147 - 2¹¹ = 23726099 is a prime.

It is not a weakly prime, because it can be changed into another prime (23728247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11864073 + 11864074.

It is an arithmetic number, because the mean of its divisors is an integer number (11864074).

Almost surely, 2^23728147 is an apocalyptic number.

23728147 is a deficient number, since it is larger than the sum of its proper divisors (1).

23728147 is an equidigital number, since it uses as much as digits as its factorization.

23728147 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18816, while the sum is 34.

The square root of 23728147 is about 4871.1545859272. The cubic root of 23728147 is about 287.3566650352.

The spelling of 23728147 in words is "twenty-three million, seven hundred twenty-eight thousand, one hundred forty-seven".