11771380 has 12 divisors (see below), whose sum is σ = 24719940. Its totient is φ = 4708544.

The previous prime is 11771363. The next prime is 11771381. The reversal of 11771380 is 8317711.

It can be written as a sum of positive squares in 2 ways, for example, as 8363664 + 3407716 = 2892^2 + 1846^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11771381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 294265 + ... + 294304.

It is an arithmetic number, because the mean of its divisors is an integer number (2059995).

Almost surely, 2^11771380 is an apocalyptic number.

11771380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11771380 is an abundant number, since it is smaller than the sum of its proper divisors (12948560).

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

11771380 is a wasteful number, since it uses less digits than its factorization.

11771380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 588578 (or 588576 counting only the distinct ones).

The product of its (nonzero) digits is 1176, while the sum is 28.

The square root of 11771380 is about 3430.9444763796. The cubic root of 11771380 is about 227.4796020837.

The spelling of 11771380 in words is "eleven million, seven hundred seventy-one thousand, three hundred eighty".