401504 has 12 divisors (see below), whose sum is σ = 790524. Its totient is φ = 200736.

The previous prime is 401477. The next prime is 401507. The reversal of 401504 is 405104.

It is a super-2 number, since 2×401504² = 322410924032, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6242 + ... + 6305.

It is an arithmetic number, because the mean of its divisors is an integer number (65877).

2⁴⁰¹⁵⁰⁴ is an apocalyptic number.

It is an amenable number.

401504 is a deficient number, since it is larger than the sum of its proper divisors (389020).

401504 is a wasteful number, since it uses less digits than its factorization.

401504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12557 (or 12549 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 401504 is about 633.6434328548. The cubic root of 401504 is about 73.7728608627.

Adding to 401504 its reverse (405104), we get a palindrome (806608).

Subtracting 401504 from its reverse (405104), we obtain a square (3600 = 60²).

The spelling of 401504 in words is "four hundred one thousand, five hundred four".