11814780 has 48 divisors (see below), whose sum is σ = 33586560. Its totient is φ = 3102528.

The previous prime is 11814773. The next prime is 11814793. The reversal of 11814780 is 8741811.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2551 + ... + 5489.

It is an arithmetic number, because the mean of its divisors is an integer number (699720).

Almost surely, 2^11814780 is an apocalyptic number.

11814780 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 11814780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16793280).

11814780 is an abundant number, since it is smaller than the sum of its proper divisors (21771780).

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

11814780 is a wasteful number, since it uses less digits than its factorization.

11814780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3018 (or 3016 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 30.

The square root of 11814780 is about 3437.2634464062. The cubic root of 11814780 is about 227.7588246948.

The spelling of 11814780 in words is "eleven million, eight hundred fourteen thousand, seven hundred eighty".