7138508 has 12 divisors (see below), whose sum is σ = 13453440. Its totient is φ = 3294672.

The previous prime is 7138489. The next prime is 7138513. The reversal of 7138508 is 8058317.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 68588 + ... + 68691.

It is an arithmetic number, because the mean of its divisors is an integer number (1121120).

Almost surely, 2^7138508 is an apocalyptic number.

It is an amenable number.

7138508 is a deficient number, since it is larger than the sum of its proper divisors (6314932).

7138508 is a wasteful number, since it uses less digits than its factorization.

7138508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137296 (or 137294 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 32.

The square root of 7138508 is about 2671.7986451078. The cubic root of 7138508 is about 192.5465834303.

The spelling of 7138508 in words is "seven million, one hundred thirty-eight thousand, five hundred eight".