28746823 has 8 divisors (see below), whose sum is σ = 33192992. Its totient is φ = 24385536.

The previous prime is 28746811. The next prime is 28746869. The reversal of 28746823 is 32864782.

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

It is not a de Polignac number, because 28746823 - 2¹³ = 28738631 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28746623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20490 + ... + 21847.

It is an arithmetic number, because the mean of its divisors is an integer number (4149124).

Almost surely, 2^28746823 is an apocalyptic number.

28746823 is a deficient number, since it is larger than the sum of its proper divisors (4446169).

28746823 is an equidigital number, since it uses as much as digits as its factorization.

28746823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42441.

The product of its digits is 129024, while the sum is 40.

The square root of 28746823 is about 5361.6063824194. The cubic root of 28746823 is about 306.3349991470.

The spelling of 28746823 in words is "twenty-eight million, seven hundred forty-six thousand, eight hundred twenty-three".