28523843 has 8 divisors (see below), whose sum is σ = 29068368. Its totient is φ = 27982944.

The previous prime is 28523839. The next prime is 28523857. The reversal of 28523843 is 34832582.

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 28523843 - 2² = 28523839 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28523543) 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, 18905 + ... + 20357.

It is an arithmetic number, because the mean of its divisors is an integer number (3633546).

Almost surely, 2^28523843 is an apocalyptic number.

28523843 is a deficient number, since it is larger than the sum of its proper divisors (544525).

28523843 is a wasteful number, since it uses less digits than its factorization.

28523843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1813.

The product of its digits is 46080, while the sum is 35.

The square root of 28523843 is about 5340.7717607102. The cubic root of 28523843 is about 305.5408945374.

The spelling of 28523843 in words is "twenty-eight million, five hundred twenty-three thousand, eight hundred forty-three".