128516074 has 4 divisors (see below), whose sum is σ = 192774114. Its totient is φ = 64258036.

The previous prime is 128516071. The next prime is 128516077. The reversal of 128516074 is 470615821.

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

It is an interprime number because it is at equal distance from previous prime (128516071) and next prime (128516077).

It can be written as a sum of positive squares in only one way, i.e., 74390625 + 54125449 = 8625^2 + 7357^2 .

It is not an unprimeable number, because it can be changed into a prime (128516071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32129017 + ... + 32129020.

Almost surely, 2^128516074 is an apocalyptic number.

128516074 is a deficient number, since it is larger than the sum of its proper divisors (64258040).

128516074 is an equidigital number, since it uses as much as digits as its factorization.

128516074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64258039.

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 128516074 is about 11336.4930203304. The cubic root of 128516074 is about 504.6448164159.

The spelling of 128516074 in words is "one hundred twenty-eight million, five hundred sixteen thousand, seventy-four".