228505400 has 48 divisors (see below), whose sum is σ = 559246200. Its totient is φ = 86590080.

The previous prime is 228505379. The next prime is 228505411. The reversal of 228505400 is 4505822.

It is a self number, because there is not a number n which added to its sum of digits gives 228505400.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26267 + ... + 33866.

Almost surely, 2^228505400 is an apocalyptic number.

228505400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

228505400 is an abundant number, since it is smaller than the sum of its proper divisors (330740800).

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

228505400 is a wasteful number, since it uses less digits than its factorization.

228505400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60168 (or 60159 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 26.

The square root of 228505400 is about 15116.3950729002. The cubic root of 228505400 is about 611.3625370084.

The spelling of 228505400 in words is "two hundred twenty-eight million, five hundred five thousand, four hundred".