11662040 has 64 divisors (see below), whose sum is σ = 29000160. Its totient is φ = 4193280.

The previous prime is 11662039. The next prime is 11662043. The reversal of 11662040 is 4026611.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11662043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21047 + ... + 21593.

Almost surely, 2^11662040 is an apocalyptic number.

11662040 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 11662040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14500080).

11662040 is an abundant number, since it is smaller than the sum of its proper divisors (17338120).

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

11662040 is a wasteful number, since it uses less digits than its factorization.

11662040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 612 (or 608 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 11662040 is about 3414.9729135090. The cubic root of 11662040 is about 226.7730853618.

Adding to 11662040 its reverse (4026611), we get a palindrome (15688651).

The spelling of 11662040 in words is "eleven million, six hundred sixty-two thousand, forty".