400013032 has 16 divisors (see below), whose sum is σ = 751104900. Its totient is φ = 199718400.

The previous prime is 400013027. The next prime is 400013041. The reversal of 400013032 is 230310004.

It can be written as a sum of positive squares in 2 ways, for example, as 393387556 + 6625476 = 19834^2 + 2574^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30057 + ... + 41272.

Almost surely, 2^400013032 is an apocalyptic number.

It is an amenable number.

400013032 is a deficient number, since it is larger than the sum of its proper divisors (351091868).

400013032 is a wasteful number, since it uses less digits than its factorization.

400013032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72036 (or 72032 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 400013032 is about 20000.3257973464. The cubic root of 400013032 is about 736.8143013576.

Adding to 400013032 its reverse (230310004), we get a palindrome (630323036).

The spelling of 400013032 in words is "four hundred million, thirteen thousand, thirty-two".