401671040 has 32 divisors (see below), whose sum is σ = 960246360. Its totient is φ = 160668160.

The previous prime is 401671009. The next prime is 401671093. The reversal of 401671040 is 40176104.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×401671040² = 322679248749363200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 401670997 and 401671015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 313166 + ... + 314445.

Almost surely, 2^401671040 is an apocalyptic number.

401671040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

401671040 is an abundant number, since it is smaller than the sum of its proper divisors (558575320).

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

401671040 is an equidigital number, since it uses as much as digits as its factorization.

401671040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 627630 (or 627618 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 401671040 is about 20041.7324600445. The cubic root of 401671040 is about 737.8309015902.

The spelling of 401671040 in words is "four hundred one million, six hundred seventy-one thousand, forty".