11111420 has 24 divisors (see below), whose sum is σ = 23517648. Its totient is φ = 4409600.

The previous prime is 11111417. The next prime is 11111431. The reversal of 11111420 is 2411111.

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, 500 + ... + 4740.

It is an arithmetic number, because the mean of its divisors is an integer number (979902).

Almost surely, 2^11111420 is an apocalyptic number.

11111420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11111420 is an abundant number, since it is smaller than the sum of its proper divisors (12406228).

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

11111420 is a wasteful number, since it uses less digits than its factorization.

11111420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4381 (or 4379 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 11111420 is about 3333.3796663447. The cubic root of 11111420 is about 223.1463844789.

Adding to 11111420 its reverse (2411111), we get a palindrome (13522531).

The spelling of 11111420 in words is "eleven million, one hundred eleven thousand, four hundred twenty".