123886386 has 48 divisors (see below), whose sum is σ = 290024280. Its totient is φ = 37992960.

The previous prime is 123886369. The next prime is 123886421. The reversal of 123886386 is 683688321.

123886386 is a `hidden beast` number, since 1 + 2 + 3 + 8 + 8 + 638 + 6 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 46991025 + 76895361 = 6855^2 + 8769^2 .

It is a super-2 number, since 2×123886386² = 30695673272281992, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 90346 + ... + 91706.

Almost surely, 2^123886386 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123886386, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (145012140).

123886386 is an abundant number, since it is smaller than the sum of its proper divisors (166137894).

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

123886386 is a wasteful number, since it uses less digits than its factorization.

123886386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1771 (or 1768 counting only the distinct ones).

The product of its digits is 331776, while the sum is 45.

The square root of 123886386 is about 11130.4261373947. The cubic root of 123886386 is about 498.5107500062.

The spelling of 123886386 in words is "one hundred twenty-three million, eight hundred eighty-six thousand, three hundred eighty-six".