7756138 has 16 divisors (see below), whose sum is σ = 12934656. Its totient is φ = 3463920.

The previous prime is 7756069. The next prime is 7756139. The reversal of 7756138 is 8316577.

It is a junction number, because it is equal to n+sod(n) for n = 7756097 and 7756106.

It is not an unprimeable number, because it can be changed into a prime (7756139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4006 + ... + 5617.

It is an arithmetic number, because the mean of its divisors is an integer number (808416).

Almost surely, 2^7756138 is an apocalyptic number.

7756138 is a deficient number, since it is larger than the sum of its proper divisors (5178518).

7756138 is a wasteful number, since it uses less digits than its factorization.

7756138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9669.

The product of its digits is 35280, while the sum is 37.

The square root of 7756138 is about 2784.9843805666. The cubic root of 7756138 is about 197.9468108669.

The spelling of 7756138 in words is "seven million, seven hundred fifty-six thousand, one hundred thirty-eight".