838842522 has 64 divisors (see below), whose sum is σ = 2013825024. Its totient is φ = 227747520.

The previous prime is 838842451. The next prime is 838842541. The reversal of 838842522 is 225248838.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 148897 + ... + 154427.

It is an arithmetic number, because the mean of its divisors is an integer number (31466016).

Almost surely, 2^838842522 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 838842522, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1006912512).

838842522 is an abundant number, since it is smaller than the sum of its proper divisors (1174982502).

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

838842522 is a wasteful number, since it uses less digits than its factorization.

838842522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5723.

The product of its digits is 245760, while the sum is 42.

The square root of 838842522 is about 28962.7782161864. The cubic root of 838842522 is about 943.1052137560.

The spelling of 838842522 in words is "eight hundred thirty-eight million, eight hundred forty-two thousand, five hundred twenty-two".