28500461 has 6 divisors (see below), whose sum is σ = 31327086. Its totient is φ = 25909400.

The previous prime is 28500401. The next prime is 28500463. The reversal of 28500461 is 16400582.

It can be written as a sum of positive squares in only one way, i.e., 26728900 + 1771561 = 5170^2 + 1331^2 .

It is not a de Polignac number, because 28500461 - 2¹⁴ = 28484077 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28500461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28500463) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 117650 + ... + 117891.

It is an arithmetic number, because the mean of its divisors is an integer number (5221181).

Almost surely, 2^28500461 is an apocalyptic number.

It is an amenable number.

28500461 is a deficient number, since it is larger than the sum of its proper divisors (2826625).

28500461 is a wasteful number, since it uses less digits than its factorization.

28500461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235563 (or 235552 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 28500461 is about 5338.5823024470. The cubic root of 28500461 is about 305.4573841658.

The spelling of 28500461 in words is "twenty-eight million, five hundred thousand, four hundred sixty-one".