282778245 has 12 divisors (see below), whose sum is σ = 490149036. Its totient is φ = 150815040.

The previous prime is 282778231. The next prime is 282778247. The reversal of 282778245 is 542877282.

It can be written as a sum of positive squares in 2 ways, for example, as 36978561 + 245799684 = 6081^2 + 15678^2 .

It is not a de Polignac number, because 282778245 - 2⁴ = 282778229 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 6283961 = 282778245 / (2 + 8 + 2 + 7 + 7 + 8 + 2 + 4 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 282778245.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (282778247) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3141936 + ... + 3142025.

It is an arithmetic number, because the mean of its divisors is an integer number (40845753).

Almost surely, 2^282778245 is an apocalyptic number.

It is an amenable number.

282778245 is a deficient number, since it is larger than the sum of its proper divisors (207370791).

282778245 is a wasteful number, since it uses less digits than its factorization.

282778245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6283972 (or 6283969 counting only the distinct ones).

The product of its digits is 501760, while the sum is 45.

The square root of 282778245 is about 16816.0115663614. The cubic root of 282778245 is about 656.3699122376.

The spelling of 282778245 in words is "two hundred eighty-two million, seven hundred seventy-eight thousand, two hundred forty-five".