401286 has 16 divisors (see below), whose sum is σ = 820224. Its totient is φ = 130824.

The previous prime is 401279. The next prime is 401287. The reversal of 401286 is 682104.

It is a super-2 number, since 2×401286² = 322060907592, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401287) by changing a digit.

401286 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 430 + ... + 993.

It is an arithmetic number, because the mean of its divisors is an integer number (51264).

2⁴⁰¹²⁸⁶ is an apocalyptic number.

401286 is an abundant number, since it is smaller than the sum of its proper divisors (418938).

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

401286 is a wasteful number, since it uses less digits than its factorization.

401286 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1475.

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 401286 is about 633.4713884620. The cubic root of 401286 is about 73.7595065788.

It can be divided in two parts, 40 and 1286, that added together give a triangular number (1326 = T₅₁).

The spelling of 401286 in words is "four hundred one thousand, two hundred eighty-six".