122838408 has 96 divisors (see below), whose sum is σ = 414797760. Its totient is φ = 31904640.

The previous prime is 122838389. The next prime is 122838421. The reversal of 122838408 is 804838221.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5535 + ... + 16622.

It is an arithmetic number, because the mean of its divisors is an integer number (4320810).

Almost surely, 2^122838408 is an apocalyptic number.

122838408 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

122838408 is an abundant number, since it is smaller than the sum of its proper divisors (291959352).

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

122838408 is a wasteful number, since it uses less digits than its factorization.

122838408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22187 (or 22180 counting only the distinct ones).

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

The square root of 122838408 is about 11083.2489821352. The cubic root of 122838408 is about 497.1011026027.

The spelling of 122838408 in words is "one hundred twenty-two million, eight hundred thirty-eight thousand, four hundred eight".