388266234408 has 256 divisors, whose sum is σ = 1180464768000. Its totient is φ = 117518936832.

The previous prime is 388266234401. The next prime is 388266234413. The reversal of 388266234408 is 804432662883.

388266234408 is a `hidden beast` number, since 3 + 8 + 8 + 2 + 6 + 623 + 4 + 4 + 0 + 8 = 666.

It is a super-2 number, since 2×388266234408² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (388266234401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 245892963 + ... + 245894541.

It is an arithmetic number, because the mean of its divisors is an integer number (4611190500).

Almost surely, 2^388266234408 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 388266234408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (590232384000).

388266234408 is an abundant number, since it is smaller than the sum of its proper divisors (792198533592).

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

388266234408 is a wasteful number, since it uses less digits than its factorization.

388266234408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2981 (or 2971 counting only the distinct ones).

The product of its (nonzero) digits is 10616832, while the sum is 54.

The spelling of 388266234408 in words is "three hundred eighty-eight billion, two hundred sixty-six million, two hundred thirty-four thousand, four hundred eight".