6432138 has 24 divisors (see below), whose sum is σ = 14234688. Its totient is φ = 2098152.

The previous prime is 6432131. The next prime is 6432149. The reversal of 6432138 is 8312346.

It is a happy number.

6432138 is a `hidden beast` number, since 643 + 2 + 13 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6432131) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2956 + ... + 4647.

It is an arithmetic number, because the mean of its divisors is an integer number (593112).

Almost surely, 2^6432138 is an apocalyptic number.

6432138 is an abundant number, since it is smaller than the sum of its proper divisors (7802550).

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

6432138 is a wasteful number, since it uses less digits than its factorization.

6432138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7658 (or 7655 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 6432138 is about 2536.1660040305. The cubic root of 6432138 is about 185.9738083134.

The spelling of 6432138 in words is "six million, four hundred thirty-two thousand, one hundred thirty-eight".