11111380 has 24 divisors (see below), whose sum is σ = 26667648. Its totient is φ = 3809568.

The previous prime is 11111341. The next prime is 11111393. The reversal of 11111380 is 8311111.

11111380 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39544 + ... + 39823.

It is an arithmetic number, because the mean of its divisors is an integer number (1111152).

Almost surely, 2^11111380 is an apocalyptic number.

11111380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11111380 is an abundant number, since it is smaller than the sum of its proper divisors (15556268).

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

11111380 is a wasteful number, since it uses less digits than its factorization.

11111380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79383 (or 79381 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 16.

The square root of 11111380 is about 3333.3736664227. The cubic root of 11111380 is about 223.1461167104.

Adding to 11111380 its reverse (8311111), we get a palindrome (19422491).

The spelling of 11111380 in words is "eleven million, one hundred eleven thousand, three hundred eighty".