284678145 has 28 divisors (see below), whose sum is σ = 512192916. Its totient is φ = 151826400.

The previous prime is 284678143. The next prime is 284678167. The reversal of 284678145 is 541876482.

It can be written as a sum of positive squares in 2 ways, for example, as 177182721 + 107495424 = 13311^2 + 10368^2 .

It is not a de Polignac number, because 284678145 - 2¹ = 284678143 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 284678145.

It is not an unprimeable number, because it can be changed into a prime (284678143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 35406 + ... + 42695.

Almost surely, 2^284678145 is an apocalyptic number.

It is an amenable number.

284678145 is a deficient number, since it is larger than the sum of its proper divisors (227514771).

284678145 is an frugal number, since it uses more digits than its factorization.

284678145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78124 (or 78109 counting only the distinct ones).

The product of its digits is 430080, while the sum is 45.

The square root of 284678145 is about 16872.4078009038. The cubic root of 284678145 is about 657.8366148294.

The spelling of 284678145 in words is "two hundred eighty-four million, six hundred seventy-eight thousand, one hundred forty-five".