123589680 has 80 divisors (see below), whose sum is σ = 403307520. Its totient is φ = 31221504.

The previous prime is 123589679. The next prime is 123589729. The reversal of 123589680 is 86985321.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8992 + ... + 18111.

It is an arithmetic number, because the mean of its divisors is an integer number (5041344).

Almost surely, 2^123589680 is an apocalyptic number.

123589680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123589680 is an abundant number, since it is smaller than the sum of its proper divisors (279717840).

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

123589680 is a wasteful number, since it uses less digits than its factorization.

123589680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27138 (or 27132 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 42.

The square root of 123589680 is about 11117.0895471792. The cubic root of 123589680 is about 498.1124566603.

The spelling of 123589680 in words is "one hundred twenty-three million, five hundred eighty-nine thousand, six hundred eighty".