11995128 has 80 divisors (see below), whose sum is σ = 34107480. Its totient is φ = 3938112.

The previous prime is 11995091. The next prime is 11995129. The reversal of 11995128 is 82159911.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 11995092 and 11995101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11995129) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 69250 + ... + 69422.

Almost surely, 2^11995128 is an apocalyptic number.

11995128 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11995128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17053740).

11995128 is an abundant number, since it is smaller than the sum of its proper divisors (22112352).

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

11995128 is a wasteful number, since it uses less digits than its factorization.

11995128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298 (or 285 counting only the distinct ones).

The product of its digits is 6480, while the sum is 36.

The square root of 11995128 is about 3463.3983311193. The cubic root of 11995128 is about 228.9118607178.

The spelling of 11995128 in words is "eleven million, nine hundred ninety-five thousand, one hundred twenty-eight".