838520 has 16 divisors (see below), whose sum is σ = 1886760. Its totient is φ = 335392.

The previous prime is 838517. The next prime is 838547. The reversal of 838520 is 25838.

It is a self number, because there is not a number n which added to its sum of digits gives 838520.

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 838520.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10442 + ... + 10521.

2⁸³⁸⁵²⁰ is an apocalyptic number.

It is an amenable number.

838520 is an abundant number, since it is smaller than the sum of its proper divisors (1048240).

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

838520 is a wasteful number, since it uses less digits than its factorization.

838520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20974 (or 20970 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 838520 is about 915.7073768404. The cubic root of 838520 is about 94.2984328463.

The spelling of 838520 in words is "eight hundred thirty-eight thousand, five hundred twenty".