128290579 has 4 divisors (see below), whose sum is σ = 128313720. Its totient is φ = 128267440.

The previous prime is 128290559. The next prime is 128290583. The reversal of 128290579 is 975092821.

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

It is a cyclic number.

It is not a de Polignac number, because 128290579 - 2¹³ = 128282387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128290529) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2244 + ... + 16174.

It is an arithmetic number, because the mean of its divisors is an integer number (32078430).

Almost surely, 2^128290579 is an apocalyptic number.

128290579 is a deficient number, since it is larger than the sum of its proper divisors (23141).

128290579 is an equidigital number, since it uses as much as digits as its factorization.

128290579 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23140.

The product of its (nonzero) digits is 90720, while the sum is 43.

The square root of 128290579 is about 11326.5431178273. The cubic root of 128290579 is about 504.3494927797.

The spelling of 128290579 in words is "one hundred twenty-eight million, two hundred ninety thousand, five hundred seventy-nine".