11799840 has 192 divisors, whose sum is σ = 41997312. Its totient is φ = 2764800.

The previous prime is 11799833. The next prime is 11799857. The reversal of 11799840 is 4899711.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 193410 + ... + 193470.

It is an arithmetic number, because the mean of its divisors is an integer number (218736).

Almost surely, 2^11799840 is an apocalyptic number.

11799840 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 11799840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20998656).

11799840 is an abundant number, since it is smaller than the sum of its proper divisors (30197472).

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

11799840 is a wasteful number, since it uses less digits than its factorization.

11799840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123 (or 115 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 39.

The square root of 11799840 is about 3435.0895184842. The cubic root of 11799840 is about 227.6627825026.

The spelling of 11799840 in words is "eleven million, seven hundred ninety-nine thousand, eight hundred forty".