23428271 has 4 divisors (see below), whose sum is σ = 23691600. Its totient is φ = 23164944.

The previous prime is 23428267. The next prime is 23428291. The reversal of 23428271 is 17282432.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 23428271 - 2² = 23428267 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 (23428211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 131531 + ... + 131708.

It is an arithmetic number, because the mean of its divisors is an integer number (5922900).

Almost surely, 2^23428271 is an apocalyptic number.

23428271 is a deficient number, since it is larger than the sum of its proper divisors (263329).

23428271 is an equidigital number, since it uses as much as digits as its factorization.

23428271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263328.

The product of its digits is 5376, while the sum is 29.

The square root of 23428271 is about 4840.2759218871. The cubic root of 23428271 is about 286.1409927993.

The spelling of 23428271 in words is "twenty-three million, four hundred twenty-eight thousand, two hundred seventy-one".