23428443 has 8 divisors (see below), whose sum is σ = 31376448. Its totient is φ = 15549704.

The previous prime is 23428439. The next prime is 23428523. The reversal of 23428443 is 34482432.

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 23428443 - 2² = 23428439 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23428443.

It is not an unprimeable number, because it can be changed into a prime (23428423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16521 + ... + 17882.

It is an arithmetic number, because the mean of its divisors is an integer number (3922056).

Almost surely, 2^23428443 is an apocalyptic number.

23428443 is a deficient number, since it is larger than the sum of its proper divisors (7948005).

23428443 is a wasteful number, since it uses less digits than its factorization.

23428443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34633.

The product of its digits is 18432, while the sum is 30.

The square root of 23428443 is about 4840.2936894366. The cubic root of 23428443 is about 286.1416930378.

It can be divided in two parts, 23428 and 443, that added together give a triangular number (23871 = T₂₁₈).

The spelling of 23428443 in words is "twenty-three million, four hundred twenty-eight thousand, four hundred forty-three".