11213860 has 48 divisors (see below), whose sum is σ = 27127296. Its totient is φ = 3814272.

The previous prime is 11213843. The next prime is 11213957. The reversal of 11213860 is 6831211.

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, 23989 + ... + 24451.

It is an arithmetic number, because the mean of its divisors is an integer number (565152).

Almost surely, 2^11213860 is an apocalyptic number.

11213860 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 11213860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13563648).

11213860 is an abundant number, since it is smaller than the sum of its proper divisors (15913436).

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

11213860 is a wasteful number, since it uses less digits than its factorization.

11213860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 652 (or 650 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 11213860 is about 3348.7101994649. The cubic root of 11213860 is about 223.8300422098.

The spelling of 11213860 in words is "eleven million, two hundred thirteen thousand, eight hundred sixty".