11202640 has 40 divisors (see below), whose sum is σ = 26201448. Its totient is φ = 4454400.

The previous prime is 11202637. The next prime is 11202641. The reversal of 11202640 is 4620211.

It can be written as a sum of positive squares in 4 ways, for example, as 1317904 + 9884736 = 1148^2 + 3144^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (16).

11202640 is a modest number, since divided by 2640 gives 1120 as remainder.

It is a zygodrome in base 4.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11202641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18340 + ... + 18940.

Almost surely, 2^11202640 is an apocalyptic number.

11202640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11202640 is an abundant number, since it is smaller than the sum of its proper divisors (14998808).

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

11202640 is a wasteful number, since it uses less digits than its factorization.

11202640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 847 (or 841 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 11202640 is about 3347.0345083372. The cubic root of 11202640 is about 223.7553664329.

Adding to 11202640 its reverse (4620211), we get a palindrome (15822851).

The spelling of 11202640 in words is "eleven million, two hundred two thousand, six hundred forty".