123056388 has 192 divisors, whose sum is σ = 413952000. Its totient is φ = 30699648.

The previous prime is 123056377. The next prime is 123056389. The reversal of 123056388 is 883650321.

123056388 is a `hidden beast` number, since 12 + 3 + 0 + 5 + 638 + 8 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (123056389) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 186403 + ... + 187061.

It is an arithmetic number, because the mean of its divisors is an integer number (2156000).

Almost surely, 2^123056388 is an apocalyptic number.

123056388 is a gapful number since it is divisible by the number (18) 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 123056388, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (206976000).

123056388 is an abundant number, since it is smaller than the sum of its proper divisors (290895612).

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

123056388 is a wasteful number, since it uses less digits than its factorization.

123056388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 711 (or 703 counting only the distinct ones).

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

The square root of 123056388 is about 11093.0783824870. The cubic root of 123056388 is about 497.3949685264.

The spelling of 123056388 in words is "one hundred twenty-three million, fifty-six thousand, three hundred eighty-eight".