228644100 has 144 divisors (see below), whose sum is σ = 773908800. Its totient is φ = 57749760.

The previous prime is 228644099. The next prime is 228644113. The reversal of 228644100 is 1446822.

228644100 is a `hidden beast` number, since 2 + 2 + 8 + 644 + 10 + 0 = 666.

It is a super-3 number, since 3×228644100³ (a number of 26 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

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 47 ways as a sum of consecutive naturals, for example, 49072 + ... + 53528.

Almost surely, 2^228644100 is an apocalyptic number.

228644100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 228644100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (386954400).

228644100 is an abundant number, since it is smaller than the sum of its proper divisors (545264700).

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

228644100 is a wasteful number, since it uses less digits than its factorization.

228644100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4499 (or 4486 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 228644100 is about 15120.9821109609. The cubic root of 228644100 is about 611.4862085320.

The spelling of 228644100 in words is "two hundred twenty-eight million, six hundred forty-four thousand, one hundred".