28538273 has 8 divisors (see below), whose sum is σ = 28976640. Its totient is φ = 28103040.

The previous prime is 28538267. The next prime is 28538281. The reversal of 28538273 is 37283582.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28538273 - 2⁸ = 28538017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28538243) 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, 22568 + ... + 23798.

It is an arithmetic number, because the mean of its divisors is an integer number (3622080).

Almost surely, 2^28538273 is an apocalyptic number.

It is an amenable number.

28538273 is a deficient number, since it is larger than the sum of its proper divisors (438367).

28538273 is a wasteful number, since it uses less digits than its factorization.

28538273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1567.

The product of its digits is 80640, while the sum is 38.

The square root of 28538273 is about 5342.1225182506. The cubic root of 28538273 is about 305.5924094733.

The spelling of 28538273 in words is "twenty-eight million, five hundred thirty-eight thousand, two hundred seventy-three".