128408145 has 8 divisors (see below), whose sum is σ = 205453056. Its totient is φ = 68484336.

The previous prime is 128408081. The next prime is 128408153. The reversal of 128408145 is 541804821.

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

It is not a de Polignac number, because 128408145 - 2⁶ = 128408081 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4280257 + ... + 4280286.

It is an arithmetic number, because the mean of its divisors is an integer number (25681632).

Almost surely, 2^128408145 is an apocalyptic number.

128408145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

128408145 is a deficient number, since it is larger than the sum of its proper divisors (77044911).

128408145 is an equidigital number, since it uses as much as digits as its factorization.

128408145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8560551.

The product of its (nonzero) digits is 10240, while the sum is 33.

The square root of 128408145 is about 11331.7317740935. The cubic root of 128408145 is about 504.5035083736.

The spelling of 128408145 in words is "one hundred twenty-eight million, four hundred eight thousand, one hundred forty-five".