128679263 has 8 divisors (see below), whose sum is σ = 132261888. Its totient is φ = 125123544.

The previous prime is 128679253. The next prime is 128679277. The reversal of 128679263 is 362976821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 128679263 - 2⁴ = 128679247 is a prime.

It is a super-3 number, since 3×128679263³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128679203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3170 + ... + 16352.

It is an arithmetic number, because the mean of its divisors is an integer number (16532736).

Almost surely, 2^128679263 is an apocalyptic number.

128679263 is a deficient number, since it is larger than the sum of its proper divisors (3582625).

128679263 is a wasteful number, since it uses less digits than its factorization.

128679263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13453.

The product of its digits is 217728, while the sum is 44.

The square root of 128679263 is about 11343.6882450110. The cubic root of 128679263 is about 504.8583244699.

The spelling of 128679263 in words is "one hundred twenty-eight million, six hundred seventy-nine thousand, two hundred sixty-three".