128730674 has 4 divisors (see below), whose sum is σ = 193096014. Its totient is φ = 64365336.

The previous prime is 128730653. The next prime is 128730703. The reversal of 128730674 is 476037821.

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

It can be written as a sum of positive squares in only one way, i.e., 126405049 + 2325625 = 11243^2 + 1525^2 .

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32182667 + ... + 32182670.

Almost surely, 2^128730674 is an apocalyptic number.

128730674 is a deficient number, since it is larger than the sum of its proper divisors (64365340).

128730674 is an equidigital number, since it uses as much as digits as its factorization.

128730674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64365339.

The product of its (nonzero) digits is 56448, while the sum is 38.

The square root of 128730674 is about 11345.9540806404. The cubic root of 128730674 is about 504.9255505711.

The spelling of 128730674 in words is "one hundred twenty-eight million, seven hundred thirty thousand, six hundred seventy-four".