11719980 has 36 divisors (see below), whose sum is σ = 35551152. Its totient is φ = 3125280.

The previous prime is 11719969. The next prime is 11719997. The reversal of 11719980 is 8991711.

11719980 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32376 + ... + 32735.

It is an arithmetic number, because the mean of its divisors is an integer number (987532).

Almost surely, 2^11719980 is an apocalyptic number.

11719980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11719980 is an abundant number, since it is smaller than the sum of its proper divisors (23831172).

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

11719980 is a wasteful number, since it uses less digits than its factorization.

11719980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65126 (or 65121 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 36.

The square root of 11719980 is about 3423.4456326923. The cubic root of 11719980 is about 227.1480207001.

The spelling of 11719980 in words is "eleven million, seven hundred nineteen thousand, nine hundred eighty".