11243400420 has 48 divisors (see below), whose sum is σ = 35978882688. Its totient is φ = 2569920000.

The previous prime is 11243400401. The next prime is 11243400433. The reversal of 11243400420 is 2400434211.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13384581 + ... + 13385420.

It is an arithmetic number, because the mean of its divisors is an integer number (749560056).

Almost surely, 2^11243400420 is an apocalyptic number.

11243400420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11243400420 is an abundant number, since it is smaller than the sum of its proper divisors (24735482268).

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

11243400420 is a wasteful number, since it uses less digits than its factorization.

11243400420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26770020 (or 26770018 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 11243400420 its reverse (2400434211), we get a palindrome (13643834631).

The spelling of 11243400420 in words is "eleven billion, two hundred forty-three million, four hundred thousand, four hundred twenty".