2228436 has 72 divisors (see below), whose sum is σ = 6639360. Its totient is φ = 616896.

The previous prime is 2228431. The next prime is 2228437. The reversal of 2228436 is 6348222.

2228436 is a `hidden beast` number, since 2 + 228 + 436 = 666.

Its product of digits (4608) is a multiple of the sum of its prime divisors (288).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2228431) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9205 + ... + 9443.

2^2228436 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2228436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3319680).

2228436 is an abundant number, since it is smaller than the sum of its proper divisors (4410924).

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

2228436 is a wasteful number, since it uses less digits than its factorization.

2228436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293 (or 288 counting only the distinct ones).

The product of its digits is 4608, while the sum is 27.

The square root of 2228436 is about 1492.7946945243. The cubic root of 2228436 is about 130.6171054347.

The spelling of 2228436 in words is "two million, two hundred twenty-eight thousand, four hundred thirty-six".