123889500 has 480 divisors, whose sum is σ = 507386880. Its totient is φ = 25660800.

The previous prime is 123889487. The next prime is 123889517. The reversal of 123889500 is 5988321.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 5386489 + ... + 5386511.

It is an arithmetic number, because the mean of its divisors is an integer number (1057056).

Almost surely, 2^123889500 is an apocalyptic number.

123889500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123889500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (253693440).

123889500 is an abundant number, since it is smaller than the sum of its proper divisors (383497380).

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

123889500 is a wasteful number, since it uses less digits than its factorization.

123889500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80 (or 59 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 123889500 is about 11130.5660233431. The cubic root of 123889500 is about 498.5149268156.

The spelling of 123889500 in words is "one hundred twenty-three million, eight hundred eighty-nine thousand, five hundred".