822381 has 8 divisors (see below), whose sum is σ = 1253184. Its totient is φ = 469920.

The previous prime is 822379. The next prime is 822383. The reversal of 822381 is 183228.

822381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (822379) and next prime (822383).

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

It is not a de Polignac number, because 822381 - 2¹ = 822379 is a prime.

It is a super-2 number, since 2×822381² = 1352621018322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (822383) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19560 + ... + 19601.

It is an arithmetic number, because the mean of its divisors is an integer number (156648).

2⁸²²³⁸¹ is an apocalyptic number.

It is an amenable number.

822381 is a deficient number, since it is larger than the sum of its proper divisors (430803).

822381 is a wasteful number, since it uses less digits than its factorization.

822381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39171.

The product of its digits is 768, while the sum is 24.

The square root of 822381 is about 906.8522481639. The cubic root of 822381 is about 93.6895218828.

The spelling of 822381 in words is "eight hundred twenty-two thousand, three hundred eighty-one".