128547879 has 8 divisors (see below), whose sum is σ = 176029680. Its totient is φ = 83382336.

The previous prime is 128547877. The next prime is 128547883. The reversal of 128547879 is 978745821.

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

It is not a de Polignac number, because 128547879 - 2¹ = 128547877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128547871) 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, 578934 + ... + 579155.

It is an arithmetic number, because the mean of its divisors is an integer number (22003710).

Almost surely, 2^128547879 is an apocalyptic number.

128547879 is a deficient number, since it is larger than the sum of its proper divisors (47481801).

128547879 is a wasteful number, since it uses less digits than its factorization.

128547879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1158129.

The product of its digits is 1128960, while the sum is 51.

The square root of 128547879 is about 11337.8957042301. The cubic root of 128547879 is about 504.6864426085.

The spelling of 128547879 in words is "one hundred twenty-eight million, five hundred forty-seven thousand, eight hundred seventy-nine".