11912040 has 192 divisors, whose sum is σ = 46051200. Its totient is φ = 2612736.

The previous prime is 11911987. The next prime is 11912051. The reversal of 11912040 is 4021911.

11912040 = T₉ + T₁₀ + ... + T₄₁₄.

11912040 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 72999 + ... + 73161.

It is an arithmetic number, because the mean of its divisors is an integer number (239850).

Almost surely, 2^11912040 is an apocalyptic number.

11912040 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 11912040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23025600).

11912040 is an abundant number, since it is smaller than the sum of its proper divisors (34139160).

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

11912040 is a wasteful number, since it uses less digits than its factorization.

11912040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216 (or 209 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The square root of 11912040 is about 3451.3823317622. The cubic root of 11912040 is about 228.3820924635.

Adding to 11912040 its reverse (4021911), we get a palindrome (15933951).

The spelling of 11912040 in words is "eleven million, nine hundred twelve thousand, forty".