128673259 has 16 divisors (see below), whose sum is σ = 151492320. Its totient is φ = 107746560.

The previous prime is 128673253. The next prime is 128673269. The reversal of 128673259 is 952376821.

It is a cyclic number.

It is not a de Polignac number, because 128673259 - 2¹⁷ = 128542187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128673253) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 113407 + ... + 114535.

It is an arithmetic number, because the mean of its divisors is an integer number (9468270).

Almost surely, 2^128673259 is an apocalyptic number.

128673259 is a deficient number, since it is larger than the sum of its proper divisors (22819061).

128673259 is a wasteful number, since it uses less digits than its factorization.

128673259 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1950.

The product of its digits is 181440, while the sum is 43.

The square root of 128673259 is about 11343.4236013648. The cubic root of 128673259 is about 504.8504723461.

The spelling of 128673259 in words is "one hundred twenty-eight million, six hundred seventy-three thousand, two hundred fifty-nine".