11217402 has 48 divisors (see below), whose sum is σ = 28035072. Its totient is φ = 3175200.

The previous prime is 11217389. The next prime is 11217407. The reversal of 11217402 is 20471211.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (11217407) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15652 + ... + 16352.

It is an arithmetic number, because the mean of its divisors is an integer number (584064).

Almost surely, 2^11217402 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11217402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14017536).

11217402 is an abundant number, since it is smaller than the sum of its proper divisors (16817670).

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

11217402 is a wasteful number, since it uses less digits than its factorization.

11217402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 843 (or 840 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 18.

The square root of 11217402 is about 3349.2390180457. The cubic root of 11217402 is about 223.8536059827.

Adding to 11217402 its reverse (20471211), we get a palindrome (31688613).

The spelling of 11217402 in words is "eleven million, two hundred seventeen thousand, four hundred two".