405881032 has 8 divisors (see below), whose sum is σ = 761026950. Its totient is φ = 202940512.

The previous prime is 405881027. The next prime is 405881041. The reversal of 405881032 is 230188504.

It can be written as a sum of positive squares in only one way, i.e., 401361156 + 4519876 = 20034^2 + 2126^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 405880985 and 405881003.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25367557 + ... + 25367572.

Almost surely, 2^405881032 is an apocalyptic number.

It is an amenable number.

405881032 is a deficient number, since it is larger than the sum of its proper divisors (355145918).

405881032 is a wasteful number, since it uses less digits than its factorization.

405881032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50735135 (or 50735131 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 31.

The square root of 405881032 is about 20146.4893219638. The cubic root of 405881032 is about 740.3997304691.

The spelling of 405881032 in words is "four hundred five million, eight hundred eighty-one thousand, thirty-two".