28277723 has 8 divisors (see below), whose sum is σ = 28680288. Its totient is φ = 27877824.

The previous prime is 28277707. The next prime is 28277737. The reversal of 28277723 is 32777282.

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 28277723 - 2⁴ = 28277707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28277773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29711 + ... + 30647.

It is an arithmetic number, because the mean of its divisors is an integer number (3585036).

Almost surely, 2^28277723 is an apocalyptic number.

28277723 is a deficient number, since it is larger than the sum of its proper divisors (402565).

28277723 is a wasteful number, since it uses less digits than its factorization.

28277723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1333.

The product of its digits is 65856, while the sum is 38.

The square root of 28277723 is about 5317.6802273172. The cubic root of 28277723 is about 304.6595610218.

The spelling of 28277723 in words is "twenty-eight million, two hundred seventy-seven thousand, seven hundred twenty-three".