285622 has 4 divisors (see below), whose sum is σ = 428436. Its totient is φ = 142810.

The previous prime is 285613. The next prime is 285629. The reversal of 285622 is 226582.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71404 + ... + 71407.

It is an arithmetic number, because the mean of its divisors is an integer number (107109).

2²⁸⁵⁶²² is an apocalyptic number.

285622 is a deficient number, since it is larger than the sum of its proper divisors (142814).

285622 is a wasteful number, since it uses less digits than its factorization.

285622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142813.

The product of its digits is 1920, while the sum is 25.

The square root of 285622 is about 534.4361514718. The cubic root of 285622 is about 65.8562835471.

The spelling of 285622 in words is "two hundred eighty-five thousand, six hundred twenty-two".