11205880 has 64 divisors (see below), whose sum is σ = 29767680. Its totient is φ = 3715200.

The previous prime is 11205869. The next prime is 11205959. The reversal of 11205880 is 8850211.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8035 + ... + 9325.

It is an arithmetic number, because the mean of its divisors is an integer number (465120).

Almost surely, 2^11205880 is an apocalyptic number.

11205880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11205880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14883840).

11205880 is an abundant number, since it is smaller than the sum of its proper divisors (18561800).

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

11205880 is a wasteful number, since it uses less digits than its factorization.

11205880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1340 (or 1336 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 25.

The square root of 11205880 is about 3347.5184838922. The cubic root of 11205880 is about 223.7769356793.

The spelling of 11205880 in words is "eleven million, two hundred five thousand, eight hundred eighty".