306822 has 8 divisors (see below), whose sum is σ = 613656. Its totient is φ = 102272.

The previous prime is 306821. The next prime is 306827. The reversal of 306822 is 228603.

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

306822 is an admirable number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 306822.

It is not an unprimeable number, because it can be changed into a prime (306821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25563 + ... + 25574.

It is an arithmetic number, because the mean of its divisors is an integer number (76707).

2³⁰⁶⁸²² is an apocalyptic number.

306822 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

306822 is a wasteful number, since it uses less digits than its factorization.

306822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51142.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 306822 is about 553.9151559580. The cubic root of 306822 is about 67.4469267309.

It can be divided in two parts, 306 and 822, that added together give a triangular number (1128 = T₄₇).

The spelling of 306822 in words is "three hundred six thousand, eight hundred twenty-two".