285430972 has 12 divisors (see below), whose sum is σ = 499622760. Its totient is φ = 142681616.

The previous prime is 285430961. The next prime is 285430979. The reversal of 285430972 is 279034582.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285430979) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26979 + ... + 36037.

It is an arithmetic number, because the mean of its divisors is an integer number (41635230).

Almost surely, 2^285430972 is an apocalyptic number.

It is an amenable number.

285430972 is a deficient number, since it is larger than the sum of its proper divisors (214191788).

285430972 is a wasteful number, since it uses less digits than its factorization.

285430972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16940 (or 16938 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 285430972 is about 16894.7024833230. The cubic root of 285430972 is about 658.4159840400.

The spelling of 285430972 in words is "two hundred eighty-five million, four hundred thirty thousand, nine hundred seventy-two".