28447323 has 8 divisors (see below), whose sum is σ = 38203200. Its totient is φ = 18828168.

The previous prime is 28447291. The next prime is 28447327. The reversal of 28447323 is 32374482.

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

It is not a de Polignac number, because 28447323 - 2⁵ = 28447291 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28447327) 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, 33693 + ... + 34526.

It is an arithmetic number, because the mean of its divisors is an integer number (4775400).

Almost surely, 2^28447323 is an apocalyptic number.

28447323 is a deficient number, since it is larger than the sum of its proper divisors (9755877).

28447323 is a wasteful number, since it uses less digits than its factorization.

28447323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68361.

The product of its digits is 32256, while the sum is 33.

The square root of 28447323 is about 5333.6031910895. The cubic root of 28447323 is about 305.2674282613.

The spelling of 28447323 in words is "twenty-eight million, four hundred forty-seven thousand, three hundred twenty-three".