401478 has 48 divisors (see below), whose sum is σ = 1021440. Its totient is φ = 102960.

The previous prime is 401477. The next prime is 401507. The reversal of 401478 is 874104.

401478 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×401478² = 322369168968, which contains 22 as substring.

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 401478.

It is not an unprimeable number, because it can be changed into a prime (401473) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5043 + ... + 5121.

It is an arithmetic number, because the mean of its divisors is an integer number (21280).

2⁴⁰¹⁴⁷⁸ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 401478, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (510720).

401478 is an abundant number, since it is smaller than the sum of its proper divisors (619962).

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

401478 is a wasteful number, since it uses less digits than its factorization.

401478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113 (or 102 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 24.

The square root of 401478 is about 633.6229162522. The cubic root of 401478 is about 73.7712684039.

The spelling of 401478 in words is "four hundred one thousand, four hundred seventy-eight".