28576723 has 4 divisors (see below), whose sum is σ = 32659120. Its totient is φ = 24494328.

The previous prime is 28576721. The next prime is 28576727. The reversal of 28576723 is 32767582.

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 28576723 - 2¹ = 28576721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28576721) 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 3 ways as a sum of consecutive naturals, for example, 2041188 + ... + 2041201.

It is an arithmetic number, because the mean of its divisors is an integer number (8164780).

Almost surely, 2^28576723 is an apocalyptic number.

28576723 is a deficient number, since it is larger than the sum of its proper divisors (4082397).

28576723 is an equidigital number, since it uses as much as digits as its factorization.

28576723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4082396.

The product of its digits is 141120, while the sum is 40.

The square root of 28576723 is about 5345.7200637519. The cubic root of 28576723 is about 305.7295908076.

The spelling of 28576723 in words is "twenty-eight million, five hundred seventy-six thousand, seven hundred twenty-three".