11880636 has 12 divisors (see below), whose sum is σ = 27721512. Its totient is φ = 3960208.

The previous prime is 11880619. The next prime is 11880647. The reversal of 11880636 is 63608811.

11880636 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 (12).

It is a super-2 number, since 2×11880636² = 282299023528992, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 11880597 and 11880606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 495015 + ... + 495038.

It is an arithmetic number, because the mean of its divisors is an integer number (2310126).

Almost surely, 2^11880636 is an apocalyptic number.

It is an amenable number.

11880636 is an abundant number, since it is smaller than the sum of its proper divisors (15840876).

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

11880636 is a wasteful number, since it uses less digits than its factorization.

11880636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 990060 (or 990058 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 11880636 is about 3446.8298478457. The cubic root of 11880636 is about 228.1812194211.

The spelling of 11880636 in words is "eleven million, eight hundred eighty thousand, six hundred thirty-six".