388426025988 has 1296 divisors, whose sum is σ = 1492023536640. Its totient is φ = 82487808000.

The previous prime is 388426025987. The next prime is 388426025989. The reversal of 388426025988 is 889520624883.

388426025988 is a `hidden beast` number, since 3 + 88 + 426 + 0 + 2 + 59 + 88 = 666.

It is an interprime number because it is at equal distance from previous prime (388426025987) and next prime (388426025989).

It is a super-2 number, since 2×388426025988² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (388426025987) by changing a digit.

It is a polite number, since it can be written in 431 ways as a sum of consecutive naturals, for example, 2572357713 + ... + 2572357863.

Almost surely, 2^388426025988 is an apocalyptic number.

388426025988 is a gapful number since it is divisible by the number (38) 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 388426025988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (746011768320).

388426025988 is an abundant number, since it is smaller than the sum of its proper divisors (1103597510652).

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

388426025988 is a wasteful number, since it uses less digits than its factorization.

388426025988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258 (or 223 counting only the distinct ones).

The product of its (nonzero) digits is 53084160, while the sum is 63.

The spelling of 388426025988 in words is "three hundred eighty-eight billion, four hundred twenty-six million, twenty-five thousand, nine hundred eighty-eight".