228340656 has 30 divisors (see below), whose sum is σ = 639037100. Its totient is φ = 76113504.

The previous prime is 228340649. The next prime is 228340667. The reversal of 228340656 is 656043822.

228340656 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 228340656.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 792706 + ... + 792993.

Almost surely, 2^228340656 is an apocalyptic number.

It is an amenable number.

228340656 is an abundant number, since it is smaller than the sum of its proper divisors (410696444).

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

228340656 is a wasteful number, since it uses less digits than its factorization.

228340656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1585713 (or 1585704 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The square root of 228340656 is about 15110.9449075827. The cubic root of 228340656 is about 611.2155783745.

The spelling of 228340656 in words is "two hundred twenty-eight million, three hundred forty thousand, six hundred fifty-six".