28616573 has 2 divisors, whose sum is σ = 28616574. Its totient is φ = 28616572.

The previous prime is 28616569. The next prime is 28616579. The reversal of 28616573 is 37561682.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27321529 + 1295044 = 5227^2 + 1138^2 .

It is a cyclic number.

It is not a de Polignac number, because 28616573 - 2² = 28616569 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28616579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14308286 + 14308287.

It is an arithmetic number, because the mean of its divisors is an integer number (14308287).

Almost surely, 2^28616573 is an apocalyptic number.

It is an amenable number.

28616573 is a deficient number, since it is larger than the sum of its proper divisors (1).

28616573 is an equidigital number, since it uses as much as digits as its factorization.

28616573 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60480, while the sum is 38.

The square root of 28616573 is about 5349.4460460874. The cubic root of 28616573 is about 305.8716372486.

The spelling of 28616573 in words is "twenty-eight million, six hundred sixteen thousand, five hundred seventy-three".