11996780 has 24 divisors (see below), whose sum is σ = 25446960. Its totient is φ = 4750400.

The previous prime is 11996773. The next prime is 11996791. The reversal of 11996780 is 8769911.

It is a happy 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 7 ways as a sum of consecutive naturals, for example, 950 + ... + 4989.

It is an arithmetic number, because the mean of its divisors is an integer number (1060290).

Almost surely, 2^11996780 is an apocalyptic number.

11996780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11996780 is an abundant number, since it is smaller than the sum of its proper divisors (13450180).

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

11996780 is a wasteful number, since it uses less digits than its factorization.

11996780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6049 (or 6047 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 41.

The square root of 11996780 is about 3463.6368169888. The cubic root of 11996780 is about 228.9223690129.

The spelling of 11996780 in words is "eleven million, nine hundred ninety-six thousand, seven hundred eighty".