228782 has 8 divisors (see below), whose sum is σ = 348096. Its totient is φ = 112752.

The previous prime is 228773. The next prime is 228793. The reversal of 228782 is 287822.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 638 + ... + 929.

It is an arithmetic number, because the mean of its divisors is an integer number (43512).

2²²⁸⁷⁸² is an apocalyptic number.

228782 is a deficient number, since it is larger than the sum of its proper divisors (119314).

228782 is a wasteful number, since it uses less digits than its factorization.

228782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1642.

The product of its digits is 3584, while the sum is 29.

The square root of 228782 is about 478.3116139088. The cubic root of 228782 is about 61.1609117165.

The spelling of 228782 in words is "two hundred twenty-eight thousand, seven hundred eighty-two".