11888920 has 32 divisors (see below), whose sum is σ = 27079920. Its totient is φ = 4696960.

The previous prime is 11888917. The next prime is 11888939. The reversal of 11888920 is 2988811.

It is a self number, because there is not a number n which added to its sum of digits gives 11888920.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1530 + ... + 5110.

Almost surely, 2^11888920 is an apocalyptic number.

11888920 is a gapful number since it is divisible by the number (10) 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 11888920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13539960).

11888920 is an abundant number, since it is smaller than the sum of its proper divisors (15191000).

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

11888920 is a wasteful number, since it uses less digits than its factorization.

11888920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3675 (or 3671 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 37.

The square root of 11888920 is about 3448.0313223635. The cubic root of 11888920 is about 228.2342416682.

The spelling of 11888920 in words is "eleven million, eight hundred eighty-eight thousand, nine hundred twenty".