123938688 has 32 divisors (see below), whose sum is σ = 329213160. Its totient is φ = 41312768.

The previous prime is 123938681. The next prime is 123938701. The reversal of 123938688 is 886839321.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×123938688² = 30721596766322688, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123938681) 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, 160995 + ... + 161762.

Almost surely, 2^123938688 is an apocalyptic number.

It is an amenable number.

123938688 is an abundant number, since it is smaller than the sum of its proper divisors (205274472).

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

123938688 is an equidigital number, since it uses as much as digits as its factorization.

123938688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322774 (or 322762 counting only the distinct ones).

The product of its digits is 497664, while the sum is 48.

The square root of 123938688 is about 11132.7753952013. The cubic root of 123938688 is about 498.5808934169.

The spelling of 123938688 in words is "one hundred twenty-three million, nine hundred thirty-eight thousand, six hundred eighty-eight".