11987892 has 96 divisors (see below), whose sum is σ = 36099840. Its totient is φ = 3369600.

The previous prime is 11987891. The next prime is 11987893. The reversal of 11987892 is 29878911.

It is an interprime number because it is at equal distance from previous prime (11987891) and next prime (11987893).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11987891) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 76278 + ... + 76434.

It is an arithmetic number, because the mean of its divisors is an integer number (376040).

Almost surely, 2^11987892 is an apocalyptic number.

11987892 is a gapful number since it is divisible by the number (12) 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 11987892, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18049920).

11987892 is an abundant number, since it is smaller than the sum of its proper divisors (24111948).

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

11987892 is a wasteful number, since it uses less digits than its factorization.

11987892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278 (or 270 counting only the distinct ones).

The product of its digits is 72576, while the sum is 45.

The square root of 11987892 is about 3462.3535348084. The cubic root of 11987892 is about 228.8658214867.

The spelling of 11987892 in words is "eleven million, nine hundred eighty-seven thousand, eight hundred ninety-two".