123712768 has 36 divisors (see below), whose sum is σ = 257691168. Its totient is φ = 59164160.

The previous prime is 123712747. The next prime is 123712769. The reversal of 123712768 is 867217321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123712769) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4618 + ... + 16393.

It is an arithmetic number, because the mean of its divisors is an integer number (7158088).

Almost surely, 2^123712768 is an apocalyptic number.

It is an amenable number.

123712768 is an abundant number, since it is smaller than the sum of its proper divisors (133978400).

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

123712768 is an equidigital number, since it uses as much as digits as its factorization.

123712768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21050 (or 21036 counting only the distinct ones).

The product of its digits is 28224, while the sum is 37.

The square root of 123712768 is about 11122.6241508018. The cubic root of 123712768 is about 498.2777652930.

The spelling of 123712768 in words is "one hundred twenty-three million, seven hundred twelve thousand, seven hundred sixty-eight".