128387254800 has 240 divisors, whose sum is σ = 472134225920. Its totient is φ = 29213637120.

The previous prime is 128387254783. The next prime is 128387254817. The reversal of 128387254800 is 8452783821.

It is an interprime number because it is at equal distance from previous prime (128387254783) and next prime (128387254817).

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 128387254800.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1838931 + ... + 1907469.

Almost surely, 2^128387254800 is an apocalyptic number.

128387254800 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 128387254800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (236067112960).

128387254800 is an abundant number, since it is smaller than the sum of its proper divisors (343746971120).

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

128387254800 is a wasteful number, since it uses less digits than its factorization.

128387254800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68790 (or 68779 counting only the distinct ones).

The product of its (nonzero) digits is 860160, while the sum is 48.

The spelling of 128387254800 in words is "one hundred twenty-eight billion, three hundred eighty-seven million, two hundred fifty-four thousand, eight hundred".