122813388 has 24 divisors (see below), whose sum is σ = 318405360. Its totient is φ = 40937760.

The previous prime is 122813377. The next prime is 122813393. The reversal of 122813388 is 883318221.

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 (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 568473 + ... + 568688.

It is an arithmetic number, because the mean of its divisors is an integer number (13266890).

Almost surely, 2^122813388 is an apocalyptic number.

122813388 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

122813388 is an abundant number, since it is smaller than the sum of its proper divisors (195591972).

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

122813388 is a wasteful number, since it uses less digits than its factorization.

122813388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1137174 (or 1137166 counting only the distinct ones).

The product of its digits is 18432, while the sum is 36.

The square root of 122813388 is about 11082.1201942589. The cubic root of 122813388 is about 497.0673500918.

It can be divided in two parts, 1228133 and 88, that added together give a palindrome (1228221).

The spelling of 122813388 in words is "one hundred twenty-two million, eight hundred thirteen thousand, three hundred eighty-eight".