128351136 has 48 divisors (see below), whose sum is σ = 337980384. Its totient is φ = 42649344.

The previous prime is 128351131. The next prime is 128351143. The reversal of 128351136 is 631153821.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×128351136² = 32948028224980992, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (128351131) 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, 31386 + ... + 35238.

It is an arithmetic number, because the mean of its divisors is an integer number (7041258).

Almost surely, 2^128351136 is an apocalyptic number.

128351136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

128351136 is an abundant number, since it is smaller than the sum of its proper divisors (209629248).

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

128351136 is a wasteful number, since it uses less digits than its factorization.

128351136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4213 (or 4205 counting only the distinct ones).

The product of its digits is 4320, while the sum is 30.

The square root of 128351136 is about 11329.2160364255. The cubic root of 128351136 is about 504.4288363245.

The spelling of 128351136 in words is "one hundred twenty-eight million, three hundred fifty-one thousand, one hundred thirty-six".