28268973 has 8 divisors (see below), whose sum is σ = 41880000. Its totient is φ = 18845964.

The previous prime is 28268971. The next prime is 28268983. The reversal of 28268973 is 37986282.

It is not a de Polignac number, because 28268973 - 2¹ = 28268971 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28268971) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 523473 + ... + 523526.

It is an arithmetic number, because the mean of its divisors is an integer number (5235000).

Almost surely, 2^28268973 is an apocalyptic number.

It is an amenable number.

28268973 is a deficient number, since it is larger than the sum of its proper divisors (13611027).

28268973 is a wasteful number, since it uses less digits than its factorization.

28268973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1047008 (or 1047002 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 28268973 is about 5316.8574364939. The cubic root of 28268973 is about 304.6281340906.

It can be divided in two parts, 28268 and 973, that added together give a square (29241 = 171²).

The spelling of 28268973 in words is "twenty-eight million, two hundred sixty-eight thousand, nine hundred seventy-three".