128733158 has 4 divisors (see below), whose sum is σ = 193099740. Its totient is φ = 64366578.

The previous prime is 128733127. The next prime is 128733161. The reversal of 128733158 is 851337821.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32183288 + ... + 32183291.

It is an arithmetic number, because the mean of its divisors is an integer number (48274935).

Almost surely, 2^128733158 is an apocalyptic number.

128733158 is a deficient number, since it is larger than the sum of its proper divisors (64366582).

128733158 is an equidigital number, since it uses as much as digits as its factorization.

128733158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64366581.

The product of its digits is 40320, while the sum is 38.

The square root of 128733158 is about 11346.0635464464. The cubic root of 128733158 is about 504.9287982483.

The spelling of 128733158 in words is "one hundred twenty-eight million, seven hundred thirty-three thousand, one hundred fifty-eight".