401928 has 16 divisors (see below), whose sum is σ = 1004880. Its totient is φ = 133968.

The previous prime is 401917. The next prime is 401939. The reversal of 401928 is 829104.

It is an interprime number because it is at equal distance from previous prime (401917) and next prime (401939).

It is a super-2 number, since 2×401928² = 323092234368, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 16747 = 401928 / (4 + 0 + 1 + 9 + 2 + 8).

It is a junction number, because it is equal to n+sod(n) for n = 401898 and 401907.

It is an unprimeable number.

401928 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 in 3 ways as a sum of consecutive naturals, for example, 8350 + ... + 8397.

It is an arithmetic number, because the mean of its divisors is an integer number (62805).

2⁴⁰¹⁹²⁸ is an apocalyptic number.

It is an amenable number.

401928 is an abundant number, since it is smaller than the sum of its proper divisors (602952).

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

401928 is a wasteful number, since it uses less digits than its factorization.

401928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16756 (or 16752 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 401928 is about 633.9779175965. The cubic root of 401928 is about 73.7988204951.

The spelling of 401928 in words is "four hundred one thousand, nine hundred twenty-eight".