28923617 has 2 divisors, whose sum is σ = 28923618. Its totient is φ = 28923616.

The previous prime is 28923607. The next prime is 28923667. The reversal of 28923617 is 71632982.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22287841 + 6635776 = 4721^2 + 2576^2 .

It is a cyclic number.

It is not a de Polignac number, because 28923617 - 2¹⁴ = 28907233 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28923607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14461808 + 14461809.

It is an arithmetic number, because the mean of its divisors is an integer number (14461809).

Almost surely, 2^28923617 is an apocalyptic number.

It is an amenable number.

28923617 is a deficient number, since it is larger than the sum of its proper divisors (1).

28923617 is an equidigital number, since it uses as much as digits as its factorization.

28923617 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288, while the sum is 38.

The square root of 28923617 is about 5378.0681475786. The cubic root of 28923617 is about 306.9617065770.

The spelling of 28923617 in words is "twenty-eight million, nine hundred twenty-three thousand, six hundred seventeen".