128455244 has 6 divisors (see below), whose sum is σ = 224796684. Its totient is φ = 64227620.

The previous prime is 128455241. The next prime is 128455267. The reversal of 128455244 is 442554821.

It is a super-2 number, since 2×128455244² = 33001499422199072, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (128455241) by changing a digit.

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 as a sum of consecutive naturals, namely, 16056902 + ... + 16056909.

It is an arithmetic number, because the mean of its divisors is an integer number (37466114).

Almost surely, 2^128455244 is an apocalyptic number.

It is an amenable number.

128455244 is a deficient number, since it is larger than the sum of its proper divisors (96341440).

128455244 is a wasteful number, since it uses less digits than its factorization.

128455244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32113815 (or 32113813 counting only the distinct ones).

The product of its digits is 51200, while the sum is 35.

The square root of 128455244 is about 11333.8097742992. The cubic root of 128455244 is about 504.5651833453.

The spelling of 128455244 in words is "one hundred twenty-eight million, four hundred fifty-five thousand, two hundred forty-four".