23428329 has 16 divisors (see below), whose sum is σ = 34515072. Its totient is φ = 14060288.

The previous prime is 23428297. The next prime is 23428337. The reversal of 23428329 is 92382432.

It is a cyclic number.

It is not a de Polignac number, because 23428329 - 2⁵ = 23428297 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23428329.

It is not an unprimeable number, because it can be changed into a prime (23428429) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8814 + ... + 11159.

It is an arithmetic number, because the mean of its divisors is an integer number (2157192).

Almost surely, 2^23428329 is an apocalyptic number.

It is an amenable number.

23428329 is a deficient number, since it is larger than the sum of its proper divisors (11086743).

23428329 is a wasteful number, since it uses less digits than its factorization.

23428329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20016.

The product of its digits is 20736, while the sum is 33.

The square root of 23428329 is about 4840.2819132774. The cubic root of 23428329 is about 286.1412289266.

The spelling of 23428329 in words is "twenty-three million, four hundred twenty-eight thousand, three hundred twenty-nine".