283778285 has 32 divisors (see below), whose sum is σ = 401102592. Its totient is φ = 188697600.

The previous prime is 283778279. The next prime is 283778293. The reversal of 283778285 is 582877382.

It is not a de Polignac number, because 283778285 - 2⁶ = 283778221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 235685 + ... + 236885.

It is an arithmetic number, because the mean of its divisors is an integer number (12534456).

Almost surely, 2^283778285 is an apocalyptic number.

It is an amenable number.

283778285 is a deficient number, since it is larger than the sum of its proper divisors (117324307).

283778285 is a wasteful number, since it uses less digits than its factorization.

283778285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1413.

The product of its digits is 1505280, while the sum is 50.

The square root of 283778285 is about 16845.7200795929. The cubic root of 283778285 is about 657.1427485710.

The spelling of 283778285 in words is "two hundred eighty-three million, seven hundred seventy-eight thousand, two hundred eighty-five".