6402132 has 96 divisors (see below), whose sum is σ = 19232640. Its totient is φ = 1820160.

The previous prime is 6402091. The next prime is 6402139. The reversal of 6402132 is 2312046.

It is a happy number.

6402132 is a `hidden beast` number, since 640 + 21 + 3 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6402139) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20038 + ... + 20354.

It is an arithmetic number, because the mean of its divisors is an integer number (200340).

Almost surely, 2^6402132 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6402132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9616320).

6402132 is an abundant number, since it is smaller than the sum of its proper divisors (12830508).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6402132 is a wasteful number, since it uses less digits than its factorization.

6402132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358 (or 350 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 6402132 is about 2530.2434665463. The cubic root of 6402132 is about 185.6841674461.

Adding to 6402132 its reverse (2312046), we get a palindrome (8714178).

It can be divided in two parts, 640 and 2132, that added together give a palindrome (2772).

The spelling of 6402132 in words is "six million, four hundred two thousand, one hundred thirty-two".