11929920 has 168 divisors, whose sum is σ = 41172384. Its totient is φ = 2924544.

The previous prime is 11929919. The next prime is 11929927. The reversal of 11929920 is 2992911.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11929927) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 277419 + ... + 277461.

Almost surely, 2^11929920 is an apocalyptic number.

11929920 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 11929920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20586192).

11929920 is an abundant number, since it is smaller than the sum of its proper divisors (29242464).

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

11929920 is a wasteful number, since it uses less digits than its factorization.

11929920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97 (or 70 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 33.

The square root of 11929920 is about 3453.9716269825. The cubic root of 11929920 is about 228.4963026916.

The spelling of 11929920 in words is "eleven million, nine hundred twenty-nine thousand, nine hundred twenty".