11555992 has 32 divisors (see below), whose sum is σ = 25344000. Its totient is φ = 4836384.

The previous prime is 11555987. The next prime is 11556001. The reversal of 11555992 is 29955511.

It is a super-2 number, since 2×11555992² = 267081902208128, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9 + ... + 4807.

It is an arithmetic number, because the mean of its divisors is an integer number (792000).

Almost surely, 2^11555992 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 11555992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12672000).

11555992 is an abundant number, since it is smaller than the sum of its proper divisors (13788008).

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

11555992 is a wasteful number, since it uses less digits than its factorization.

11555992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4855 (or 4851 counting only the distinct ones).

The product of its digits is 20250, while the sum is 37.

The square root of 11555992 is about 3399.4105371373. The cubic root of 11555992 is about 226.0836091306.

The spelling of 11555992 in words is "eleven million, five hundred fifty-five thousand, nine hundred ninety-two".