228868440 has 64 divisors (see below), whose sum is σ = 687679200. Its totient is φ = 60936192.

The previous prime is 228868439. The next prime is 228868457. The reversal of 228868440 is 44868822.

It is a junction number, because it is equal to n+sod(n) for n = 228868392 and 228868401.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 110454 + ... + 112506.

Almost surely, 2^228868440 is an apocalyptic number.

228868440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

228868440 is an abundant number, since it is smaller than the sum of its proper divisors (458810760).

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

228868440 is a wasteful number, since it uses less digits than its factorization.

228868440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2996 (or 2992 counting only the distinct ones).

The product of its (nonzero) digits is 196608, while the sum is 42.

The square root of 228868440 is about 15128.3984611723. The cubic root of 228868440 is about 611.6861349305.

The spelling of 228868440 in words is "two hundred twenty-eight million, eight hundred sixty-eight thousand, four hundred forty".