11938680 has 96 divisors (see below), whose sum is σ = 41801760. Its totient is φ = 2937600.

The previous prime is 11938643. The next prime is 11938681. The reversal of 11938680 is 8683911.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11938681) 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 23 ways as a sum of consecutive naturals, for example, 3405 + ... + 5955.

It is an arithmetic number, because the mean of its divisors is an integer number (435435).

Almost surely, 2^11938680 is an apocalyptic number.

11938680 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 11938680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20900880).

11938680 is an abundant number, since it is smaller than the sum of its proper divisors (29863080).

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

11938680 is a wasteful number, since it uses less digits than its factorization.

11938680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2581 (or 2574 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 11938680 is about 3455.2394996585. The cubic root of 11938680 is about 228.5522163912.

The spelling of 11938680 in words is "eleven million, nine hundred thirty-eight thousand, six hundred eighty".