11980836 has 36 divisors (see below), whose sum is σ = 34612032. Its totient is φ = 3423024.

The previous prime is 11980819. The next prime is 11980841. The reversal of 11980836 is 63808911.

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 a zygodrome in base 8.

It is a self number, because there is not a number n which added to its sum of digits gives 11980836.

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, 23520 + ... + 24023.

Almost surely, 2^11980836 is an apocalyptic number.

It is an amenable number.

11980836 is an abundant number, since it is smaller than the sum of its proper divisors (22631196).

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

11980836 is a wasteful number, since it uses less digits than its factorization.

11980836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47560 (or 47555 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 11980836 is about 3461.3344247559. The cubic root of 11980836 is about 228.8209096658.

The spelling of 11980836 in words is "eleven million, nine hundred eighty thousand, eight hundred thirty-six".