23428567 has 4 divisors (see below), whose sum is σ = 24806736. Its totient is φ = 22050400.

The previous prime is 23428553. The next prime is 23428571. The reversal of 23428567 is 76582432.

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 23428567 - 2⁷ = 23428439 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 (23428267) 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 3 ways as a sum of consecutive naturals, for example, 689059 + ... + 689092.

It is an arithmetic number, because the mean of its divisors is an integer number (6201684).

Almost surely, 2^23428567 is an apocalyptic number.

23428567 is a deficient number, since it is larger than the sum of its proper divisors (1378169).

23428567 is a wasteful number, since it uses less digits than its factorization.

23428567 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1378168.

The product of its digits is 80640, while the sum is 37.

The square root of 23428567 is about 4840.3064985598. The cubic root of 23428567 is about 286.1421978588.

The spelling of 23428567 in words is "twenty-three million, four hundred twenty-eight thousand, five hundred sixty-seven".