401766880 has 24 divisors (see below), whose sum is σ = 949174632. Its totient is φ = 160706688.

The previous prime is 401766863. The next prime is 401766901. The reversal of 401766880 is 88667104.

It is a super-2 number, since 2×401766880² = 322833251729868800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 1255362 + ... + 1255681.

It is an arithmetic number, because the mean of its divisors is an integer number (39548943).

Almost surely, 2^401766880 is an apocalyptic number.

401766880 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

401766880 is an abundant number, since it is smaller than the sum of its proper divisors (547407752).

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

401766880 is a wasteful number, since it uses less digits than its factorization.

401766880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2511058 (or 2511050 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 401766880 is about 20044.1233282975. The cubic root of 401766880 is about 737.8895798643.

The spelling of 401766880 in words is "four hundred one million, seven hundred sixty-six thousand, eight hundred eighty".