23428911 has 8 divisors (see below), whose sum is σ = 34078464. Its totient is φ = 14199320.

The previous prime is 23428883. The next prime is 23428921. The reversal of 23428911 is 11982432.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23428911 - 2¹⁵ = 23396143 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23428921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 354951 + ... + 355016.

It is an arithmetic number, because the mean of its divisors is an integer number (4259808).

Almost surely, 2^23428911 is an apocalyptic number.

23428911 is a deficient number, since it is larger than the sum of its proper divisors (10649553).

23428911 is a wasteful number, since it uses less digits than its factorization.

23428911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 709981.

The product of its digits is 3456, while the sum is 30.

The square root of 23428911 is about 4840.3420333691. The cubic root of 23428911 is about 286.1435983205.

The spelling of 23428911 in words is "twenty-three million, four hundred twenty-eight thousand, nine hundred eleven".