283628561 has 8 divisors (see below), whose sum is σ = 316118880. Its totient is φ = 252894528.

The previous prime is 283628533. The next prime is 283628563. The reversal of 283628561 is 165826382.

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 283628561 - 2¹⁰ = 283627537 is a prime.

It is a super-2 number, since 2×283628561² = 160890321229861442, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (283628563) 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 7 ways as a sum of consecutive naturals, for example, 438731 + ... + 439376.

It is an arithmetic number, because the mean of its divisors is an integer number (39514860).

Almost surely, 2^283628561 is an apocalyptic number.

It is an amenable number.

283628561 is a deficient number, since it is larger than the sum of its proper divisors (32490319).

283628561 is a wasteful number, since it uses less digits than its factorization.

283628561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 878143.

The product of its digits is 138240, while the sum is 41.

The square root of 283628561 is about 16841.2755158272. The cubic root of 283628561 is about 657.0271567457.

The spelling of 283628561 in words is "two hundred eighty-three million, six hundred twenty-eight thousand, five hundred sixty-one".