128294455 has 4 divisors (see below), whose sum is σ = 153953352. Its totient is φ = 102635560.

The previous prime is 128294447. The next prime is 128294471. The reversal of 128294455 is 554492821.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 128294455 - 2³ = 128294447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 12829441 + ... + 12829450.

It is an arithmetic number, because the mean of its divisors is an integer number (38488338).

Almost surely, 2^128294455 is an apocalyptic number.

128294455 is a deficient number, since it is larger than the sum of its proper divisors (25658897).

128294455 is an equidigital number, since it uses as much as digits as its factorization.

128294455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25658896.

The product of its digits is 115200, while the sum is 40.

The square root of 128294455 is about 11326.7142190487. The cubic root of 128294455 is about 504.3545719756.

The spelling of 128294455 in words is "one hundred twenty-eight million, two hundred ninety-four thousand, four hundred fifty-five".