11720980 has 24 divisors (see below), whose sum is σ = 24984288. Its totient is φ = 4617888.

The previous prime is 11720977. The next prime is 11720981. The reversal of 11720980 is 8902711.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11720981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3034 + ... + 5713.

It is an arithmetic number, because the mean of its divisors is an integer number (1041012).

Almost surely, 2^11720980 is an apocalyptic number.

11720980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11720980 is an abundant number, since it is smaller than the sum of its proper divisors (13263308).

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

11720980 is a wasteful number, since it uses less digits than its factorization.

11720980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8823 (or 8821 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 28.

The square root of 11720980 is about 3423.5916812611. The cubic root of 11720980 is about 227.1544809375.

The spelling of 11720980 in words is "eleven million, seven hundred twenty thousand, nine hundred eighty".