11472321 has 16 divisors (see below), whose sum is σ = 17840000. Its totient is φ = 6555024.

The previous prime is 11472319. The next prime is 11472337. The reversal of 11472321 is 12327411.

11472321 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11472321 - 2¹ = 11472319 is a prime.

It is a super-2 number, since 2×11472321² = 263228298254082, which contains 22 as substring.

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

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11472311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4546 + ... + 6603.

It is an arithmetic number, because the mean of its divisors is an integer number (1115000).

Almost surely, 2^11472321 is an apocalyptic number.

It is an amenable number.

11472321 is a deficient number, since it is larger than the sum of its proper divisors (6367679).

11472321 is an equidigital number, since it uses as much as digits as its factorization.

11472321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11173 (or 11159 counting only the distinct ones).

The product of its digits is 336, while the sum is 21.

The square root of 11472321 is about 3387.0814870623. The cubic root of 11472321 is about 225.5366351329.

Adding to 11472321 its reverse (12327411), we get a palindrome (23799732).

The spelling of 11472321 in words is "eleven million, four hundred seventy-two thousand, three hundred twenty-one".