11222428 has 24 divisors (see below), whose sum is σ = 22518272. Its totient is φ = 4793904.

The previous prime is 11222423. The next prime is 11222429. The reversal of 11222428 is 82422211.

It is a junction number, because it is equal to n+sod(n) for n = 11222399 and 11222408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11222423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13225 + ... + 14047.

Almost surely, 2^11222428 is an apocalyptic number.

It is an amenable number.

11222428 is an abundant number, since it is smaller than the sum of its proper divisors (11295844).

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

11222428 is a wasteful number, since it uses less digits than its factorization.

11222428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1321 (or 1319 counting only the distinct ones).

The product of its digits is 512, while the sum is 22.

The square root of 11222428 is about 3349.9892537141. The cubic root of 11222428 is about 223.8870338130.

Adding to 11222428 its reverse (82422211), we get a palindrome (93644639).

The spelling of 11222428 in words is "eleven million, two hundred twenty-two thousand, four hundred twenty-eight".