400006532 has 12 divisors (see below), whose sum is σ = 741188700. Its totient is φ = 188238336.

The previous prime is 400006513. The next prime is 400006573. The reversal of 400006532 is 235600004.

It can be written as a sum of positive squares in 2 ways, for example, as 221890816 + 178115716 = 14896^2 + 13346^2 .

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, 2941157 + ... + 2941292.

It is an arithmetic number, because the mean of its divisors is an integer number (61765725).

Almost surely, 2^400006532 is an apocalyptic number.

It is an amenable number.

400006532 is a deficient number, since it is larger than the sum of its proper divisors (341182168).

400006532 is a wasteful number, since it uses less digits than its factorization.

400006532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5882470 (or 5882468 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 400006532 is about 20000.1632993333. The cubic root of 400006532 is about 736.8103103885.

Adding to 400006532 its reverse (235600004), we get a palindrome (635606536).

The spelling of 400006532 in words is "four hundred million, six thousand, five hundred thirty-two".