28383143 has 8 divisors (see below), whose sum is σ = 29353968. Its totient is φ = 27428544.

The previous prime is 28383133. The next prime is 28383161. The reversal of 28383143 is 34138382.

It is a happy number.

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 28383143 - 2¹⁰ = 28382119 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 (28383133) 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, 446 + ... + 7547.

It is an arithmetic number, because the mean of its divisors is an integer number (3669246).

Almost surely, 2^28383143 is an apocalyptic number.

28383143 is a deficient number, since it is larger than the sum of its proper divisors (970825).

28383143 is an equidigital number, since it uses as much as digits as its factorization.

28383143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8113.

The product of its digits is 13824, while the sum is 32.

The square root of 28383143 is about 5327.5832231885. The cubic root of 28383143 is about 305.0376841371.

The spelling of 28383143 in words is "twenty-eight million, three hundred eighty-three thousand, one hundred forty-three".