123269388 has 48 divisors (see below), whose sum is σ = 317775360. Its totient is φ = 36878400.

The previous prime is 123269383. The next prime is 123269407. The reversal of 123269388 is 883962321.

It is not an unprimeable number, because it can be changed into a prime (123269383) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 4518 + ... + 16338.

It is an arithmetic number, because the mean of its divisors is an integer number (6620320).

Almost surely, 2^123269388 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123269388, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (158887680).

123269388 is an abundant number, since it is smaller than the sum of its proper divisors (194505972).

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

123269388 is a wasteful number, since it uses less digits than its factorization.

123269388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11918 (or 11916 counting only the distinct ones).

The product of its digits is 124416, while the sum is 42.

The square root of 123269388 is about 11102.6748128548. The cubic root of 123269388 is about 497.6817857095.

The spelling of 123269388 in words is "one hundred twenty-three million, two hundred sixty-nine thousand, three hundred eighty-eight".