401822 has 8 divisors (see below), whose sum is σ = 622272. Its totient is φ = 194400.

The previous prime is 401813. The next prime is 401827. The reversal of 401822 is 228104.

401822 = 14² + 15² + ... + 106².

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

It is a super-2 number, since 2×401822² = 322921839368, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 401822.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401827) 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, 3179 + ... + 3302.

It is an arithmetic number, because the mean of its divisors is an integer number (77784).

2⁴⁰¹⁸²² is an apocalyptic number.

401822 is a deficient number, since it is larger than the sum of its proper divisors (220450).

401822 is a wasteful number, since it uses less digits than its factorization.

401822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6514.

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 401822 is about 633.8943129576. The cubic root of 401822 is about 73.7923322992.

Adding to 401822 its reverse (228104), we get a palindrome (629926).

The spelling of 401822 in words is "four hundred one thousand, eight hundred twenty-two".