28886423 has 4 divisors (see below), whose sum is σ = 28937760. Its totient is φ = 28835088.

The previous prime is 28886419. The next prime is 28886437. The reversal of 28886423 is 32468882.

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 28886423 - 2² = 28886419 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 (28886323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24815 + ... + 25952.

It is an arithmetic number, because the mean of its divisors is an integer number (7234440).

Almost surely, 2^28886423 is an apocalyptic number.

28886423 is a deficient number, since it is larger than the sum of its proper divisors (51337).

28886423 is an equidigital number, since it uses as much as digits as its factorization.

28886423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51336.

The product of its digits is 147456, while the sum is 41.

The square root of 28886423 is about 5374.6091020650. The cubic root of 28886423 is about 306.8300721514.

The spelling of 28886423 in words is "twenty-eight million, eight hundred eighty-six thousand, four hundred twenty-three".