128361156 has 144 divisors (see below), whose sum is σ = 383601792. Its totient is φ = 32693760.

The previous prime is 128361139. The next prime is 128361157. The reversal of 128361156 is 651163821.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (128361157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 741886 + ... + 742058.

Almost surely, 2^128361156 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 128361156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (191800896).

128361156 is an abundant number, since it is smaller than the sum of its proper divisors (255240636).

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

128361156 is a wasteful number, since it uses less digits than its factorization.

128361156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282 (or 269 counting only the distinct ones).

The product of its digits is 8640, while the sum is 33.

The square root of 128361156 is about 11329.6582472730. The cubic root of 128361156 is about 504.4419624138.

The spelling of 128361156 in words is "one hundred twenty-eight million, three hundred sixty-one thousand, one hundred fifty-six".