11280472 has 16 divisors (see below), whose sum is σ = 24172560. Its totient is φ = 4834464.

The previous prime is 11280439. The next prime is 11280473. The reversal of 11280472 is 27408211.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11280473) 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, 100663 + ... + 100774.

It is an arithmetic number, because the mean of its divisors is an integer number (1510785).

Almost surely, 2^11280472 is an apocalyptic number.

It is an amenable number.

11280472 is an abundant number, since it is smaller than the sum of its proper divisors (12892088).

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

11280472 is a wasteful number, since it uses less digits than its factorization.

11280472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201450 (or 201446 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 25.

The square root of 11280472 is about 3358.6413919917. The cubic root of 11280472 is about 224.2723621523.

Adding to 11280472 its reverse (27408211), we get a palindrome (38688683).

The spelling of 11280472 in words is "eleven million, two hundred eighty thousand, four hundred seventy-two".