405632132 has 6 divisors (see below), whose sum is σ = 709856238. Its totient is φ = 202816064.

The previous prime is 405632131. The next prime is 405632167. The reversal of 405632132 is 231236504.

It can be written as a sum of positive squares in only one way, i.e., 273703936 + 131928196 = 16544^2 + 11486^2 .

It is not an unprimeable number, because it can be changed into a prime (405632131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50704013 + ... + 50704020.

It is an arithmetic number, because the mean of its divisors is an integer number (118309373).

Almost surely, 2^405632132 is an apocalyptic number.

It is an amenable number.

405632132 is a deficient number, since it is larger than the sum of its proper divisors (304224106).

405632132 is a wasteful number, since it uses less digits than its factorization.

405632132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101408037 (or 101408035 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 405632132 is about 20140.3111197419. The cubic root of 405632132 is about 740.2483534553.

Adding to 405632132 its reverse (231236504), we get a palindrome (636868636).

The spelling of 405632132 in words is "four hundred five million, six hundred thirty-two thousand, one hundred thirty-two".