28814423 has 8 divisors (see below), whose sum is σ = 32800896. Its totient is φ = 25055800.

The previous prime is 28814419. The next prime is 28814437. The reversal of 28814423 is 32441882.

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

It is not a de Polignac number, because 28814423 - 2² = 28814419 is a prime.

It is a super-4 number, since 4×28814423⁴ (a number of 31 digits) contains 4444 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28814423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28814413) 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, 56693 + ... + 57198.

It is an arithmetic number, because the mean of its divisors is an integer number (4100112).

Almost surely, 2^28814423 is an apocalyptic number.

28814423 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

28814423 is a deficient number, since it is larger than the sum of its proper divisors (3986473).

28814423 is a wasteful number, since it uses less digits than its factorization.

28814423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113925.

The product of its digits is 12288, while the sum is 32.

The square root of 28814423 is about 5367.9067614853. The cubic root of 28814423 is about 306.5749333113.

The spelling of 28814423 in words is "twenty-eight million, eight hundred fourteen thousand, four hundred twenty-three".