11980845 has 16 divisors (see below), whose sum is σ = 21299520. Its totient is φ = 6389712.

The previous prime is 11980841. The next prime is 11980847. The reversal of 11980845 is 54808911.

11980845 is digitally balanced in base 2, base 3 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11980845 - 2² = 11980841 is a prime.

It is a zygodrome in base 8.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11980841) 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, 44239 + ... + 44508.

It is an arithmetic number, because the mean of its divisors is an integer number (1331220).

Almost surely, 2^11980845 is an apocalyptic number.

11980845 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11980845 is a deficient number, since it is larger than the sum of its proper divisors (9318675).

11980845 is an equidigital number, since it uses as much as digits as its factorization.

11980845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88761 (or 88755 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 36.

The square root of 11980845 is about 3461.3357248323. The cubic root of 11980845 is about 228.8209669625.

The spelling of 11980845 in words is "eleven million, nine hundred eighty thousand, eight hundred forty-five".