228217446 has 16 divisors (see below), whose sum is σ = 507150000. Its totient is φ = 76072464.

The previous prime is 228217433. The next prime is 228217447. The reversal of 228217446 is 644712822.

228217446 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 228217446.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228217447) 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, 2113071 + ... + 2113178.

It is an arithmetic number, because the mean of its divisors is an integer number (31696875).

Almost surely, 2^228217446 is an apocalyptic number.

228217446 is an abundant number, since it is smaller than the sum of its proper divisors (278932554).

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

228217446 is a wasteful number, since it uses less digits than its factorization.

228217446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4226260 (or 4226254 counting only the distinct ones).

The product of its digits is 43008, while the sum is 36.

The square root of 228217446 is about 15106.8675111686. The cubic root of 228217446 is about 611.1056236226.

The spelling of 228217446 in words is "two hundred twenty-eight million, two hundred seventeen thousand, four hundred forty-six".