122808438 has 48 divisors (see below), whose sum is σ = 281935680. Its totient is φ = 38526192.

The previous prime is 122808437. The next prime is 122808449. The reversal of 122808438 is 834808221.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122808437) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 54645 + ... + 56847.

It is an arithmetic number, because the mean of its divisors is an integer number (5873660).

Almost surely, 2^122808438 is an apocalyptic number.

122808438 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 122808438, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (140967840).

122808438 is an abundant number, since it is smaller than the sum of its proper divisors (159127242).

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

122808438 is a wasteful number, since it uses less digits than its factorization.

122808438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2393 (or 2390 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 36.

The square root of 122808438 is about 11081.8968592926. The cubic root of 122808438 is about 497.0606718936.

The spelling of 122808438 in words is "one hundred twenty-two million, eight hundred eight thousand, four hundred thirty-eight".