28760723 has 4 divisors (see below), whose sum is σ = 28785000. Its totient is φ = 28736448.

The previous prime is 28760717. The next prime is 28760773. The reversal of 28760723 is 32706782.

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 28760723 - 2²⁴ = 11983507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28760773) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10265 + ... + 12762.

It is an arithmetic number, because the mean of its divisors is an integer number (7196250).

Almost surely, 2^28760723 is an apocalyptic number.

28760723 is a deficient number, since it is larger than the sum of its proper divisors (24277).

28760723 is a wasteful number, since it uses less digits than its factorization.

28760723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24276.

The product of its (nonzero) digits is 28224, while the sum is 35.

The square root of 28760723 is about 5362.9024790686. The cubic root of 28760723 is about 306.3843654181.

The spelling of 28760723 in words is "twenty-eight million, seven hundred sixty thousand, seven hundred twenty-three".