11393980 has 36 divisors (see below), whose sum is σ = 25917192. Its totient is φ = 4205760.

The previous prime is 11393971. The next prime is 11393989. The reversal of 11393980 is 8939311.

It is an interprime number because it is at equal distance from previous prime (11393971) and next prime (11393989).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11393989) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1695 + ... + 5065.

It is an arithmetic number, because the mean of its divisors is an integer number (719922).

Almost surely, 2^11393980 is an apocalyptic number.

11393980 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 11393980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12958596).

11393980 is an abundant number, since it is smaller than the sum of its proper divisors (14523212).

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

11393980 is a wasteful number, since it uses less digits than its factorization.

11393980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3406 (or 3391 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 34.

The square root of 11393980 is about 3375.4970004430. The cubic root of 11393980 is about 225.0220883665.

The spelling of 11393980 in words is "eleven million, three hundred ninety-three thousand, nine hundred eighty".