123708880 has 20 divisors (see below), whose sum is σ = 287623332. Its totient is φ = 49483520.

The previous prime is 123708859. The next prime is 123708911. The reversal of 123708880 is 88807321.

It can be written as a sum of positive squares in 2 ways, for example, as 66977856 + 56731024 = 8184^2 + 7532^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 773101 + ... + 773260.

Almost surely, 2^123708880 is an apocalyptic number.

123708880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123708880 is an abundant number, since it is smaller than the sum of its proper divisors (163914452).

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

123708880 is a wasteful number, since it uses less digits than its factorization.

123708880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1546374 (or 1546368 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 37.

The square root of 123708880 is about 11122.4493705299. The cubic root of 123708880 is about 498.2725453407.

The spelling of 123708880 in words is "one hundred twenty-three million, seven hundred eight thousand, eight hundred eighty".