11217960 has 256 divisors, whose sum is σ = 43545600. Its totient is φ = 2543616.

The previous prime is 11217959. The next prime is 11217989. The reversal of 11217960 is 6971211.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 238657 + ... + 238703.

It is an arithmetic number, because the mean of its divisors is an integer number (170100).

Almost surely, 2^11217960 is an apocalyptic number.

11217960 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 11217960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21772800).

11217960 is an abundant number, since it is smaller than the sum of its proper divisors (32327640).

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

11217960 is a wasteful number, since it uses less digits than its factorization.

11217960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97 (or 87 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 27.

The square root of 11217960 is about 3349.3223195148. The cubic root of 11217960 is about 223.8573177228.

The spelling of 11217960 in words is "eleven million, two hundred seventeen thousand, nine hundred sixty".