28588723 has 2 divisors, whose sum is σ = 28588724. Its totient is φ = 28588722.

The previous prime is 28588709. The next prime is 28588739. The reversal of 28588723 is 32788582.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28588723 is a prime.

It is a super-3 number, since 3×28588723³ (a number of 23 digits) contains 333 as substring.

It is equal to p_1775779 and since 28588723 and 1775779 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28588723.

It is not a weakly prime, because it can be changed into another prime (28588123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14294361 + 14294362.

It is an arithmetic number, because the mean of its divisors is an integer number (14294362).

Almost surely, 2^28588723 is an apocalyptic number.

28588723 is a deficient number, since it is larger than the sum of its proper divisors (1).

28588723 is an equidigital number, since it uses as much as digits as its factorization.

28588723 is an evil number, because the sum of its binary digits is even.

The product of its digits is 215040, while the sum is 43.

The square root of 28588723 is about 5346.8423391755. The cubic root of 28588723 is about 305.7723790316.

The spelling of 28588723 in words is "twenty-eight million, five hundred eighty-eight thousand, seven hundred twenty-three".