11421320 has 16 divisors (see below), whose sum is σ = 25698060. Its totient is φ = 4568512.

The previous prime is 11421269. The next prime is 11421323. The reversal of 11421320 is 2312411.

It can be written as a sum of positive squares in 2 ways, for example, as 10719076 + 702244 = 3274^2 + 838^2 .

It is a junction number, because it is equal to n+sod(n) for n = 11421295 and 11421304.

It is not an unprimeable number, because it can be changed into a prime (11421323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142727 + ... + 142806.

Almost surely, 2^11421320 is an apocalyptic number.

11421320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11421320 is an abundant number, since it is smaller than the sum of its proper divisors (14276740).

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

11421320 is a wasteful number, since it uses less digits than its factorization.

11421320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285544 (or 285540 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 11421320 is about 3379.5443479854. The cubic root of 11421320 is about 225.2019257239.

Adding to 11421320 its reverse (2312411), we get a palindrome (13733731).

The spelling of 11421320 in words is "eleven million, four hundred twenty-one thousand, three hundred twenty".