123147328 has 56 divisors (see below), whose sum is σ = 250342400. Its totient is φ = 60092928.

The previous prime is 123147307. The next prime is 123147329. The reversal of 123147328 is 823741321.

It is a self number, because there is not a number n which added to its sum of digits gives 123147328.

It is not an unprimeable number, because it can be changed into a prime (123147329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 885883 + ... + 886021.

It is an arithmetic number, because the mean of its divisors is an integer number (4470400).

Almost surely, 2^123147328 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 123147328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125171200).

123147328 is an abundant number, since it is smaller than the sum of its proper divisors (127195072).

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

123147328 is a wasteful number, since it uses less digits than its factorization.

123147328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387 (or 377 counting only the distinct ones).

The product of its digits is 8064, while the sum is 31.

The square root of 123147328 is about 11097.1765778508. The cubic root of 123147328 is about 497.5174651074.

Adding to 123147328 its reverse (823741321), we get a palindrome (946888649).

The spelling of 123147328 in words is "one hundred twenty-three million, one hundred forty-seven thousand, three hundred twenty-eight".