226249728 has 88 divisors (see below), whose sum is σ = 616261632. Its totient is φ = 73764864.

The previous prime is 226249721. The next prime is 226249729. The reversal of 226249728 is 827942622.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 226249728.

It is not an unprimeable number, because it can be changed into a prime (226249721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 143601 + ... + 145167.

Almost surely, 2^226249728 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 226249728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (308130816).

226249728 is an abundant number, since it is smaller than the sum of its proper divisors (390011904).

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

226249728 is a wasteful number, since it uses less digits than its factorization.

226249728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1637 (or 1619 counting only the distinct ones).

The product of its digits is 193536, while the sum is 42.

The square root of 226249728 is about 15041.5999149027. The cubic root of 226249728 is about 609.3442096842.

The spelling of 226249728 in words is "two hundred twenty-six million, two hundred forty-nine thousand, seven hundred twenty-eight".