123823216 has 40 divisors (see below), whose sum is σ = 264451824. Its totient is φ = 55695360.

The previous prime is 123823213. The next prime is 123823261. The reversal of 123823216 is 612328321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123823213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13446 + ... + 20698.

Almost surely, 2^123823216 is an apocalyptic number.

123823216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123823216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (132225912).

123823216 is an abundant number, since it is smaller than the sum of its proper divisors (140628608).

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

123823216 is a wasteful number, since it uses less digits than its factorization.

123823216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7369 (or 7363 counting only the distinct ones).

The product of its digits is 3456, while the sum is 28.

The square root of 123823216 is about 11127.5880585147. The cubic root of 123823216 is about 498.4260049451.

The spelling of 123823216 in words is "one hundred twenty-three million, eight hundred twenty-three thousand, two hundred sixteen".