2272436728 has 8 divisors (see below), whose sum is σ = 4260818880. Its totient is φ = 1136218360.

The previous prime is 2272436717. The next prime is 2272436729. The reversal of 2272436728 is 8276342722.

It is a happy number.

2272436728 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2272436729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142027288 + ... + 142027303.

It is an arithmetic number, because the mean of its divisors is an integer number (532602360).

Almost surely, 2^2272436728 is an apocalyptic number.

It is an amenable number.

2272436728 is a deficient number, since it is larger than the sum of its proper divisors (1988382152).

2272436728 is a wasteful number, since it uses less digits than its factorization.

2272436728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284054597 (or 284054593 counting only the distinct ones).

The product of its digits is 451584, while the sum is 43.

The square root of 2272436728 is about 47670.0821060757. The cubic root of 2272436728 is about 1314.7119182725.

The spelling of 2272436728 in words is "two billion, two hundred seventy-two million, four hundred thirty-six thousand, seven hundred twenty-eight".