6400132 has 6 divisors (see below), whose sum is σ = 11200238. Its totient is φ = 3200064.

The previous prime is 6400123. The next prime is 6400139. The reversal of 6400132 is 2310046.

It can be written as a sum of positive squares in only one way, i.e., 5447556 + 952576 = 2334^2 + 976^2 .

It is not an unprimeable number, because it can be changed into a prime (6400139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 800013 + ... + 800020.

Almost surely, 2^6400132 is an apocalyptic number.

It is an amenable number.

6400132 is a deficient number, since it is larger than the sum of its proper divisors (4800106).

6400132 is a wasteful number, since it uses less digits than its factorization.

6400132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1600037 (or 1600035 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 6400132 is about 2529.8482167909. The cubic root of 6400132 is about 185.6648297727.

Adding to 6400132 its reverse (2310046), we get a palindrome (8710178).

The spelling of 6400132 in words is "six million, four hundred thousand, one hundred thirty-two".