285143745 has 8 divisors (see below), whose sum is σ = 456230016. Its totient is φ = 152076656.

The previous prime is 285143743. The next prime is 285143753. The reversal of 285143745 is 547341582.

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 285143745 - 2¹ = 285143743 is a prime.

It is not an unprimeable number, because it can be changed into a prime (285143741) 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, 9504777 + ... + 9504806.

It is an arithmetic number, because the mean of its divisors is an integer number (57028752).

Almost surely, 2^285143745 is an apocalyptic number.

It is an amenable number.

285143745 is a deficient number, since it is larger than the sum of its proper divisors (171086271).

285143745 is a wasteful number, since it uses less digits than its factorization.

285143745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19009591.

The product of its digits is 134400, while the sum is 39.

The square root of 285143745 is about 16886.1998389217. The cubic root of 285143745 is about 658.1950569311.

The spelling of 285143745 in words is "two hundred eighty-five million, one hundred forty-three thousand, seven hundred forty-five".