285272973 has 24 divisors (see below), whose sum is σ = 435751680. Its totient is φ = 179340480.

The previous prime is 285272941. The next prime is 285272987. The reversal of 285272973 is 379272582.

It is not a de Polignac number, because 285272973 - 2⁵ = 285272941 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 (285272873) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34393 + ... + 41873.

It is an arithmetic number, because the mean of its divisors is an integer number (18156320).

Almost surely, 2^285272973 is an apocalyptic number.

It is an amenable number.

285272973 is a deficient number, since it is larger than the sum of its proper divisors (150478707).

285272973 is a wasteful number, since it uses less digits than its factorization.

285272973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7729 (or 7726 counting only the distinct ones).

The product of its digits is 423360, while the sum is 45.

The square root of 285272973 is about 16890.0258436747. The cubic root of 285272973 is about 658.2944739049.

The spelling of 285272973 in words is "two hundred eighty-five million, two hundred seventy-two thousand, nine hundred seventy-three".