11013920 has 48 divisors (see below), whose sum is σ = 27397440. Its totient is φ = 4172544.

The previous prime is 11013917. The next prime is 11013923. The reversal of 11013920 is 2931011.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (11013917) and next prime (11013923).

It is not an unprimeable number, because it can be changed into a prime (11013923) 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, 1229 + ... + 4851.

It is an arithmetic number, because the mean of its divisors is an integer number (570780).

Almost surely, 2^11013920 is an apocalyptic number.

11013920 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 11013920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13698720).

11013920 is an abundant number, since it is smaller than the sum of its proper divisors (16383520).

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

11013920 is a wasteful number, since it uses less digits than its factorization.

11013920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3657 (or 3649 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 17.

The square root of 11013920 is about 3318.7226458383. The cubic root of 11013920 is about 222.4917810371.

Adding to 11013920 its reverse (2931011), we get a palindrome (13944931).

The spelling of 11013920 in words is "eleven million, thirteen thousand, nine hundred twenty".