123183872 has 72 divisors (see below), whose sum is σ = 286536096. Its totient is φ = 51757056.

The previous prime is 123183833. The next prime is 123183881. The reversal of 123183872 is 278381321.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94328 + ... + 95624.

It is an arithmetic number, because the mean of its divisors is an integer number (3979668).

Almost surely, 2^123183872 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 123183872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (143268048).

123183872 is an abundant number, since it is smaller than the sum of its proper divisors (163352224).

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

123183872 is an equidigital number, since it uses as much as digits as its factorization.

123183872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1373 (or 1359 counting only the distinct ones).

The product of its digits is 16128, while the sum is 35.

The square root of 123183872 is about 11098.8230006609. The cubic root of 123183872 is about 497.5666730505.

The spelling of 123183872 in words is "one hundred twenty-three million, one hundred eighty-three thousand, eight hundred seventy-two".