128910361 has 8 divisors (see below), whose sum is σ = 130104704. Its totient is φ = 127720800.

The previous prime is 128910347. The next prime is 128910367. The reversal of 128910361 is 163019821.

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 128910361 - 2⁷ = 128910233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128910367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72661 + ... + 74413.

It is an arithmetic number, because the mean of its divisors is an integer number (16263088).

Almost surely, 2^128910361 is an apocalyptic number.

It is an amenable number.

128910361 is a deficient number, since it is larger than the sum of its proper divisors (1194343).

128910361 is a wasteful number, since it uses less digits than its factorization.

128910361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2391.

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 128910361 is about 11353.8698689037. The cubic root of 128910361 is about 505.1603725531.

The spelling of 128910361 in words is "one hundred twenty-eight million, nine hundred ten thousand, three hundred sixty-one".