128453508 has 18 divisors (see below), whose sum is σ = 324702014. Its totient is φ = 42817824.

The previous prime is 128453497. The next prime is 128453527. The reversal of 128453508 is 805354821.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 107495424 + 20958084 = 10368^2 + 4578^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 3568153 = 128453508 / (1 + 2 + 8 + 4 + 5 + 3 + 5 + 0 + 8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1784041 + ... + 1784112.

Almost surely, 2^128453508 is an apocalyptic number.

128453508 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

128453508 is an abundant number, since it is smaller than the sum of its proper divisors (196248506).

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

128453508 is a wasteful number, since it uses less digits than its factorization.

128453508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3568163 (or 3568158 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 36.

The square root of 128453508 is about 11333.7331890247. The cubic root of 128453508 is about 504.5629103640.

The spelling of 128453508 in words is "one hundred twenty-eight million, four hundred fifty-three thousand, five hundred eight".