7987158 has 12 divisors (see below), whose sum is σ = 17305548. Its totient is φ = 2662380.

The previous prime is 7987139. The next prime is 7987223. The reversal of 7987158 is 8517897.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 221848 + ... + 221883.

It is an arithmetic number, because the mean of its divisors is an integer number (1442129).

Almost surely, 2^7987158 is an apocalyptic number.

7987158 is an abundant number, since it is smaller than the sum of its proper divisors (9318390).

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

7987158 is a wasteful number, since it uses less digits than its factorization.

7987158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 443739 (or 443736 counting only the distinct ones).

The product of its digits is 141120, while the sum is 45.

The square root of 7987158 is about 2826.1560466471. The cubic root of 7987158 is about 199.8929260194.

The spelling of 7987158 in words is "seven million, nine hundred eighty-seven thousand, one hundred fifty-eight".