128819154 has 16 divisors (see below), whose sum is σ = 260743392. Its totient is φ = 42422208.

The previous prime is 128819153. The next prime is 128819161. The reversal of 128819154 is 451918821.

It is not an unprimeable number, because it can be changed into a prime (128819153) 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, 128839 + ... + 129834.

It is an arithmetic number, because the mean of its divisors is an integer number (16296462).

Almost surely, 2^128819154 is an apocalyptic number.

128819154 is an abundant number, since it is smaller than the sum of its proper divisors (131924238).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

128819154 is a wasteful number, since it uses less digits than its factorization.

128819154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258761.

The product of its digits is 23040, while the sum is 39.

The square root of 128819154 is about 11349.8525981618. The cubic root of 128819154 is about 505.0412069764.

The spelling of 128819154 in words is "one hundred twenty-eight million, eight hundred nineteen thousand, one hundred fifty-four".