11781376 has 18 divisors (see below), whose sum is σ = 23517242. Its totient is φ = 5890560.

The previous prime is 11781361. The next prime is 11781377. The reversal of 11781376 is 67318711.

It can be written as a sum of positive squares in only one way, i.e., 11723776 + 57600 = 3424^2 + 240^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11781377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22755 + ... + 23266.

Almost surely, 2^11781376 is an apocalyptic number.

11781376 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

11781376 is a deficient number, since it is larger than the sum of its proper divisors (11735866).

11781376 is an frugal number, since it uses more digits than its factorization.

11781376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46037 (or 46023 counting only the distinct ones).

The product of its digits is 7056, while the sum is 34.

The square root of 11781376 is about 3432.4009089848. The cubic root of 11781376 is about 227.5439741104.

The spelling of 11781376 in words is "eleven million, seven hundred eighty-one thousand, three hundred seventy-six".