28573065 has 36 divisors (see below), whose sum is σ = 51256452. Its totient is φ = 14713920.

The previous prime is 28573063. The next prime is 28573079. The reversal of 28573065 is 56037582.

28573065 is a `hidden beast` number, since 28 + 573 + 0 + 65 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 18688329 + 9884736 = 4323^2 + 3144^2 .

It is not a de Polignac number, because 28573065 - 2¹ = 28573063 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28573063) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 218050 + ... + 218180.

Almost surely, 2^28573065 is an apocalyptic number.

It is an amenable number.

28573065 is a deficient number, since it is larger than the sum of its proper divisors (22683387).

28573065 is a wasteful number, since it uses less digits than its factorization.

28573065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310 (or 176 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 28573065 is about 5345.3779099330. The cubic root of 28573065 is about 305.7165451484.

The spelling of 28573065 in words is "twenty-eight million, five hundred seventy-three thousand, sixty-five".