128784097 has 8 divisors (see below), whose sum is σ = 141916544. Its totient is φ = 116112528.

The previous prime is 128784077. The next prime is 128784101. The reversal of 128784097 is 790487821.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-128784097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128784017) 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, 114633 + ... + 115750.

It is an arithmetic number, because the mean of its divisors is an integer number (17739568).

Almost surely, 2^128784097 is an apocalyptic number.

It is an amenable number.

128784097 is a deficient number, since it is larger than the sum of its proper divisors (13132447).

128784097 is a wasteful number, since it uses less digits than its factorization.

128784097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230439.

The product of its (nonzero) digits is 225792, while the sum is 46.

The square root of 128784097 is about 11348.3081117848. The cubic root of 128784097 is about 504.9953886453.

The spelling of 128784097 in words is "one hundred twenty-eight million, seven hundred eighty-four thousand, ninety-seven".