228984440 has 16 divisors (see below), whose sum is σ = 515215080. Its totient is φ = 91593760.

The previous prime is 228984421. The next prime is 228984449. The reversal of 228984440 is 44489822.

It is a super-2 number, since 2×228984440² = 104867747524227200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228984449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2862266 + ... + 2862345.

Almost surely, 2^228984440 is an apocalyptic number.

228984440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

228984440 is an abundant number, since it is smaller than the sum of its proper divisors (286230640).

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

228984440 is a wasteful number, since it uses less digits than its factorization.

228984440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5724622 (or 5724618 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 41.

The square root of 228984440 is about 15132.2318248169. The cubic root of 228984440 is about 611.7894600945.

The spelling of 228984440 in words is "two hundred twenty-eight million, nine hundred eighty-four thousand, four hundred forty".