11781072 has 40 divisors (see below), whose sum is σ = 33817280. Its totient is φ = 3926880.

The previous prime is 11781043. The next prime is 11781089. The reversal of 11781072 is 27018711.

11781072 is digitally balanced in base 2, because in such base 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 (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13204 + ... + 14067.

It is an arithmetic number, because the mean of its divisors is an integer number (845432).

Almost surely, 2^11781072 is an apocalyptic number.

11781072 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11781072 is an abundant number, since it is smaller than the sum of its proper divisors (22036208).

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

11781072 is a wasteful number, since it uses less digits than its factorization.

11781072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27288 (or 27276 counting only the distinct ones).

The product of its (nonzero) digits is 784, while the sum is 27.

The square root of 11781072 is about 3432.3566248279. The cubic root of 11781072 is about 227.5420169546.

Adding to 11781072 its reverse (27018711), we get a palindrome (38799783).

The spelling of 11781072 in words is "eleven million, seven hundred eighty-one thousand, seventy-two".