11796780 has 24 divisors (see below), whose sum is σ = 33031152. Its totient is φ = 3145792.

The previous prime is 11796773. The next prime is 11796781. The reversal of 11796780 is 8769711.

Added to its reverse (8769711) it gives a triangular number (20566491 = T₆₄₁₃).

It is not an unprimeable number, because it can be changed into a prime (11796781) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98247 + ... + 98366.

It is an arithmetic number, because the mean of its divisors is an integer number (1376298).

Almost surely, 2^11796780 is an apocalyptic number.

11796780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11796780 is an abundant number, since it is smaller than the sum of its proper divisors (21234372).

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

11796780 is a wasteful number, since it uses less digits than its factorization.

11796780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196625 (or 196623 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 39.

The square root of 11796780 is about 3434.6440863647. The cubic root of 11796780 is about 227.6431012091.

Adding to 11796780 its reverse (8769711), we get a triangular number (20566491 = T₆₄₁₃).

The spelling of 11796780 in words is "eleven million, seven hundred ninety-six thousand, seven hundred eighty".