7157838 has 32 divisors (see below), whose sum is σ = 15298560. Its totient is φ = 2227680.

The previous prime is 7157827. The next prime is 7157849. The reversal of 7157838 is 8387517.

7157838 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (7157827) and next prime (7157849).

It is a junction number, because it is equal to n+sod(n) for n = 7157796 and 7157805.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4731 + ... + 6057.

It is an arithmetic number, because the mean of its divisors is an integer number (478080).

Almost surely, 2^7157838 is an apocalyptic number.

7157838 is an abundant number, since it is smaller than the sum of its proper divisors (8140722).

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

7157838 is a wasteful number, since it uses less digits than its factorization.

7157838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1392.

The product of its digits is 47040, while the sum is 39.

The square root of 7157838 is about 2675.4136128831. The cubic root of 7157838 is about 192.7202224704.

The spelling of 7157838 in words is "seven million, one hundred fifty-seven thousand, eight hundred thirty-eight".