283728665 has 12 divisors (see below), whose sum is σ = 374241252. Its totient is φ = 206347680.

The previous prime is 283728661. The next prime is 283728689. The reversal of 283728665 is 566827382.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 62552281 + 221176384 = 7909^2 + 14872^2 .

It is not a de Polignac number, because 283728665 - 2² = 283728661 is a prime.

It is not an unprimeable number, because it can be changed into a prime (283728661) 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, 233882 + ... + 235091.

It is an arithmetic number, because the mean of its divisors is an integer number (31186771).

Almost surely, 2^283728665 is an apocalyptic number.

It is an amenable number.

283728665 is a deficient number, since it is larger than the sum of its proper divisors (90512587).

283728665 is a wasteful number, since it uses less digits than its factorization.

283728665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469000 (or 468989 counting only the distinct ones).

The product of its digits is 967680, while the sum is 47.

The square root of 283728665 is about 16844.2472375586. The cubic root of 283728665 is about 657.1044448134.

The spelling of 283728665 in words is "two hundred eighty-three million, seven hundred twenty-eight thousand, six hundred sixty-five".