401571980 has 24 divisors (see below), whose sum is σ = 843786720. Its totient is φ = 160536320.

The previous prime is 401571979. The next prime is 401571997. The reversal of 401571980 is 89175104.

It is a super-2 number, since 2×401571980² = 322520110242240800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 401571980.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37865 + ... + 47295.

It is an arithmetic number, because the mean of its divisors is an integer number (35157780).

Almost surely, 2^401571980 is an apocalyptic number.

It is an amenable number.

401571980 is an abundant number, since it is smaller than the sum of its proper divisors (442214740).

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

401571980 is a wasteful number, since it uses less digits than its factorization.

401571980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11569 (or 11567 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 35.

The square root of 401571980 is about 20039.2609644168. The cubic root of 401571980 is about 737.7702420529.

The spelling of 401571980 in words is "four hundred one million, five hundred seventy-one thousand, nine hundred eighty".