11779980 has 48 divisors (see below), whose sum is σ = 34927200. Its totient is φ = 2956288.

The previous prime is 11779973. The next prime is 11779987. The reversal of 11779980 is 8997711.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (11779973) and next prime (11779987).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11779987) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4755 + ... + 6794.

It is an arithmetic number, because the mean of its divisors is an integer number (727650).

Almost surely, 2^11779980 is an apocalyptic number.

11779980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11779980 is an abundant number, since it is smaller than the sum of its proper divisors (23147220).

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

11779980 is a wasteful number, since it uses less digits than its factorization.

11779980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11578 (or 11576 counting only the distinct ones).

The product of its (nonzero) digits is 31752, while the sum is 42.

The square root of 11779980 is about 3432.1975467621. The cubic root of 11779980 is about 227.5349863675.

The spelling of 11779980 in words is "eleven million, seven hundred seventy-nine thousand, nine hundred eighty".