401569040 has 40 divisors (see below), whose sum is σ = 963771648. Its totient is φ = 155445120.

The previous prime is 401569033. The next prime is 401569067. The reversal of 401569040 is 40965104.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×401569040² = 322515387773043200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 401568994 and 401569012.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78482 + ... + 83441.

Almost surely, 2^401569040 is an apocalyptic number.

401569040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

401569040 is an abundant number, since it is smaller than the sum of its proper divisors (562202608).

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

401569040 is a wasteful number, since it uses less digits than its factorization.

401569040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161967 (or 161961 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 401569040 is about 20039.1876082839. The cubic root of 401569040 is about 737.7684415871.

The spelling of 401569040 in words is "four hundred one million, five hundred sixty-nine thousand, forty".