7157994 has 16 divisors (see below), whose sum is σ = 14353632. Its totient is φ = 2379728.

The previous prime is 7157987. The next prime is 7157999. The reversal of 7157994 is 4997517.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (7157999) 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, 1312 + ... + 4004.

It is an arithmetic number, because the mean of its divisors is an integer number (897102).

Almost surely, 2^7157994 is an apocalyptic number.

7157994 is an abundant number, since it is smaller than the sum of its proper divisors (7195638).

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

7157994 is a wasteful number, since it uses less digits than its factorization.

7157994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3141.

The product of its digits is 79380, while the sum is 42.

The square root of 7157994 is about 2675.4427670948. The cubic root of 7157994 is about 192.7216225271.

The spelling of 7157994 in words is "seven million, one hundred fifty-seven thousand, nine hundred ninety-four".