11781234 has 16 divisors (see below), whose sum is σ = 26180640. Its totient is φ = 3927060.

The previous prime is 11781233. The next prime is 11781241. The reversal of 11781234 is 43218711.

11781234 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 junction number, because it is equal to n+sod(n) for n = 11781198 and 11781207.

It is not an unprimeable number, because it can be changed into a prime (11781233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109032 + ... + 109139.

It is an arithmetic number, because the mean of its divisors is an integer number (1636290).

Almost surely, 2^11781234 is an apocalyptic number.

11781234 is an abundant number, since it is smaller than the sum of its proper divisors (14399406).

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

11781234 is a wasteful number, since it uses less digits than its factorization.

11781234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218182 (or 218176 counting only the distinct ones).

The product of its digits is 1344, while the sum is 27.

The square root of 11781234 is about 3432.3802236932. The cubic root of 11781234 is about 227.5430599168.

Adding to 11781234 its reverse (43218711), we get a palindrome (54999945).

The spelling of 11781234 in words is "eleven million, seven hundred eighty-one thousand, two hundred thirty-four".