123386580 has 72 divisors (see below), whose sum is σ = 375901344. Its totient is φ = 32760000.

The previous prime is 123386579. The next prime is 123386581. The reversal of 123386580 is 85683321.

It is an interprime number because it is at equal distance from previous prime (123386579) and next prime (123386581).

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123386581) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 43815 + ... + 46545.

It is an arithmetic number, because the mean of its divisors is an integer number (5220852).

Almost surely, 2^123386580 is an apocalyptic number.

123386580 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 123386580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (187950672).

123386580 is an abundant number, since it is smaller than the sum of its proper divisors (252514764).

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

123386580 is a wasteful number, since it uses less digits than its factorization.

123386580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2997 (or 2992 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 123386580 is about 11107.9512062306. The cubic root of 123386580 is about 497.8394508351.

The spelling of 123386580 in words is "one hundred twenty-three million, three hundred eighty-six thousand, five hundred eighty".