11228471 has 4 divisors (see below), whose sum is σ = 11327952. Its totient is φ = 11128992.

The previous prime is 11228447. The next prime is 11228509. The reversal of 11228471 is 17482211.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11228471 is a prime.

It is a super-3 number, since 3×11228471³ (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11228471.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11228171) 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, 49571 + ... + 49796.

It is an arithmetic number, because the mean of its divisors is an integer number (2831988).

Almost surely, 2^11228471 is an apocalyptic number.

11228471 is a deficient number, since it is larger than the sum of its proper divisors (99481).

11228471 is an equidigital number, since it uses as much as digits as its factorization.

11228471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99480.

The product of its digits is 896, while the sum is 26.

The square root of 11228471 is about 3350.8910755201. The cubic root of 11228471 is about 223.9272124795.

The spelling of 11228471 in words is "eleven million, two hundred twenty-eight thousand, four hundred seventy-one".