401382 has 16 divisors (see below), whose sum is σ = 892080. Its totient is φ = 133776.

The previous prime is 401381. The next prime is 401393. The reversal of 401382 is 283104.

It is a happy number.

It is a super-2 number, since 2×401382² = 322215019848, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401381) 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, 3663 + ... + 3770.

It is an arithmetic number, because the mean of its divisors is an integer number (55755).

2⁴⁰¹³⁸² is an apocalyptic number.

401382 is an abundant number, since it is smaller than the sum of its proper divisors (490698).

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

401382 is a wasteful number, since it uses less digits than its factorization.

401382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7444 (or 7438 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 401382 is about 633.5471568873. The cubic root of 401382 is about 73.7653879602.

Adding to 401382 its reverse (283104), we get a palindrome (684486).

It can be divided in two parts, 4013 and 82, that added together give a triangular number (4095 = T₉₀).

The spelling of 401382 in words is "four hundred one thousand, three hundred eighty-two".