128983157 has 8 divisors (see below), whose sum is σ = 133393152. Its totient is φ = 124588800.

The previous prime is 128983133. The next prime is 128983159. The reversal of 128983157 is 751389821.

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 128983157 - 2⁶ = 128983093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128983159) 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, 14282 + ... + 21492.

It is an arithmetic number, because the mean of its divisors is an integer number (16674144).

Almost surely, 2^128983157 is an apocalyptic number.

It is an amenable number.

128983157 is a deficient number, since it is larger than the sum of its proper divisors (4409995).

128983157 is an equidigital number, since it uses as much as digits as its factorization.

128983157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7819.

The product of its digits is 120960, while the sum is 44.

The square root of 128983157 is about 11357.0751956655. The cubic root of 128983157 is about 505.2554430975.

The spelling of 128983157 in words is "one hundred twenty-eight million, nine hundred eighty-three thousand, one hundred fifty-seven".