971838 has 40 divisors (see below), whose sum is σ = 2491632. Its totient is φ = 277344.

The previous prime is 971833. The next prime is 971851. The reversal of 971838 is 838179.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 971838.

It is not an unprimeable number, because it can be changed into a prime (971833) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 706 + ... + 1562.

2⁹⁷¹⁸³⁸ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 971838, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1245816).

971838 is an abundant number, since it is smaller than the sum of its proper divisors (1519794).

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

971838 is a wasteful number, since it uses less digits than its factorization.

971838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 878 (or 869 counting only the distinct ones).

The product of its digits is 12096, while the sum is 36.

The square root of 971838 is about 985.8184417021. The cubic root of 971838 is about 99.0523139490.

The spelling of 971838 in words is "nine hundred seventy-one thousand, eight hundred thirty-eight".