7832138 has 8 divisors (see below), whose sum is σ = 12439332. Its totient is φ = 3685696.

The previous prime is 7832131. The next prime is 7832141. The reversal of 7832138 is 8312387.

It can be written as a sum of positive squares in 2 ways, for example, as 7711729 + 120409 = 2777^2 + 347^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×7832138² = 122684771302088, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7832131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115145 + ... + 115212.

Almost surely, 2^7832138 is an apocalyptic number.

7832138 is a deficient number, since it is larger than the sum of its proper divisors (4607194).

7832138 is a wasteful number, since it uses less digits than its factorization.

7832138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230376.

The product of its digits is 8064, while the sum is 32.

The square root of 7832138 is about 2798.5957192849. The cubic root of 7832138 is about 198.5912504212.

Subtracting 7832138 from its reverse (8312387), we obtain a square (480249 = 693²).

The spelling of 7832138 in words is "seven million, eight hundred thirty-two thousand, one hundred thirty-eight".