28588817 has 2 divisors, whose sum is σ = 28588818. Its totient is φ = 28588816.

The previous prime is 28588811. The next prime is 28588829. The reversal of 28588817 is 71888582.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21911761 + 6677056 = 4681^2 + 2584^2 .

It is a cyclic number.

It is not a de Polignac number, because 28588817 - 2¹⁶ = 28523281 is a prime.

It is not a weakly prime, because it can be changed into another prime (28588811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14294408 + 14294409.

It is an arithmetic number, because the mean of its divisors is an integer number (14294409).

Almost surely, 2^28588817 is an apocalyptic number.

It is an amenable number.

28588817 is a deficient number, since it is larger than the sum of its proper divisors (1).

28588817 is an equidigital number, since it uses as much as digits as its factorization.

28588817 is an evil number, because the sum of its binary digits is even.

The product of its digits is 286720, while the sum is 47.

The square root of 28588817 is about 5346.8511294032. The cubic root of 28588817 is about 305.7727141588.

The spelling of 28588817 in words is "twenty-eight million, five hundred eighty-eight thousand, eight hundred seventeen".