408428880 has 80 divisors (see below), whose sum is σ = 1297041984. Its totient is φ = 106255360.

The previous prime is 408428863. The next prime is 408428929. The reversal of 408428880 is 88824804.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10914 + ... + 30593.

Almost surely, 2^408428880 is an apocalyptic number.

408428880 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

408428880 is an abundant number, since it is smaller than the sum of its proper divisors (888613104).

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

408428880 is a wasteful number, since it uses less digits than its factorization.

408428880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41564 (or 41558 counting only the distinct ones).

The product of its (nonzero) digits is 131072, while the sum is 42.

The square root of 408428880 is about 20209.6234502279. The cubic root of 408428880 is about 741.9457437872.

The spelling of 408428880 in words is "four hundred eight million, four hundred twenty-eight thousand, eight hundred eighty".