128454975 has 144 divisors (see below), whose sum is σ = 275768064. Its totient is φ = 56448000.

The previous prime is 128454973. The next prime is 128455001. The reversal of 128454975 is 579454821.

128454975 is a `hidden beast` number, since 128 + 454 + 9 + 75 = 666.

It is not a de Polignac number, because 128454975 - 2¹ = 128454973 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

Its product of digits (403200) is a multiple of the sum of its prime divisors (150).

It is a self number, because there is not a number n which added to its sum of digits gives 128454975.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128454973) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 1809190 + ... + 1809260.

It is an arithmetic number, because the mean of its divisors is an integer number (1915056).

Almost surely, 2^128454975 is an apocalyptic number.

128454975 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

128454975 is an abundant number, since it is smaller than the sum of its proper divisors (147313089).

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

128454975 is a wasteful number, since it uses less digits than its factorization.

128454975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158 (or 150 counting only the distinct ones).

The product of its digits is 403200, while the sum is 45.

The square root of 128454975 is about 11333.7979071448. The cubic root of 128454975 is about 504.5648311393.

The spelling of 128454975 in words is "one hundred twenty-eight million, four hundred fifty-four thousand, nine hundred seventy-five".