123386220 has 96 divisors (see below), whose sum is σ = 393301440. Its totient is φ = 32094720.

The previous prime is 123386167. The next prime is 123386239. The reversal of 123386220 is 22683321.

123386220 is a `hidden beast` number, since 1 + 2 + 3 + 38 + 622 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19354 + ... + 24926.

It is an arithmetic number, because the mean of its divisors is an integer number (4096890).

Almost surely, 2^123386220 is an apocalyptic number.

123386220 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 123386220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (196650720).

123386220 is an abundant number, since it is smaller than the sum of its proper divisors (269915220).

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

123386220 is a wasteful number, since it uses less digits than its factorization.

123386220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5632 (or 5624 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 123386220 is about 11107.9350016103. The cubic root of 123386220 is about 497.8389666594.

The spelling of 123386220 in words is "one hundred twenty-three million, three hundred eighty-six thousand, two hundred twenty".