123536320 has 28 divisors (see below), whose sum is σ = 294171624. Its totient is φ = 49414400.

The previous prime is 123536251. The next prime is 123536323. The reversal of 123536320 is 23635321.

It is a happy number.

It is a super-2 number, since 2×123536320² = 30522444718284800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123536323) 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, 192706 + ... + 193345.

Almost surely, 2^123536320 is an apocalyptic number.

123536320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123536320 is an abundant number, since it is smaller than the sum of its proper divisors (170635304).

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

123536320 is an equidigital number, since it uses as much as digits as its factorization.

123536320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386068 (or 386058 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 25.

The square root of 123536320 is about 11114.6893793754. The cubic root of 123536320 is about 498.0407594473.

Subtracting from 123536320 its reverse (23635321), we obtain a palindrome (99900999).

The spelling of 123536320 in words is "one hundred twenty-three million, five hundred thirty-six thousand, three hundred twenty".