123616044 has 72 divisors (see below), whose sum is σ = 343154448. Its totient is φ = 38776320.

The previous prime is 123616043. The next prime is 123616057. The reversal of 123616044 is 440616321.

123616044 is a `hidden beast` number, since 1 + 2 + 3 + 616 + 0 + 44 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 123615999 and 123616017.

It is not an unprimeable number, because it can be changed into a prime (123616043) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12784 + ... + 20264.

It is an arithmetic number, because the mean of its divisors is an integer number (4766034).

Almost surely, 2^123616044 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 123616044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (171577224).

123616044 is an abundant number, since it is smaller than the sum of its proper divisors (219538404).

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

123616044 is a wasteful number, since it uses less digits than its factorization.

123616044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7517 (or 7503 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 123616044 is about 11118.2752259512. The cubic root of 123616044 is about 498.1478730562.

The spelling of 123616044 in words is "one hundred twenty-three million, six hundred sixteen thousand, forty-four".