123488638 has 96 divisors (see below), whose sum is σ = 250871040. Its totient is φ = 44478720.

The previous prime is 123488609. The next prime is 123488639. The reversal of 123488638 is 836884321.

It is a junction number, because it is equal to n+sod(n) for n = 123488594 and 123488603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123488639) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1843081 + ... + 1843147.

It is an arithmetic number, because the mean of its divisors is an integer number (2613240).

Almost surely, 2^123488638 is an apocalyptic number.

123488638 is an abundant number, since it is smaller than the sum of its proper divisors (127382402).

123488638 is a wasteful number, since it uses less digits than its factorization.

123488638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162 (or 149 counting only the distinct ones).

The product of its digits is 221184, while the sum is 43.

The square root of 123488638 is about 11112.5441731406. The cubic root of 123488638 is about 497.9766740148.

The spelling of 123488638 in words is "one hundred twenty-three million, four hundred eighty-eight thousand, six hundred thirty-eight".