228644619700 has 144 divisors (see below), whose sum is σ = 569761032960. Its totient is φ = 78017172480.

The previous prime is 228644619689. The next prime is 228644619713. The reversal of 228644619700 is 7916446822.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 186953289 + ... + 186954511.

It is an arithmetic number, because the mean of its divisors is an integer number (3956673840).

Almost surely, 2^228644619700 is an apocalyptic number.

228644619700 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 228644619700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (284880516480).

228644619700 is an abundant number, since it is smaller than the sum of its proper divisors (341116413260).

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

228644619700 is a wasteful number, since it uses less digits than its factorization.

228644619700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2306 (or 2299 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 49.

The spelling of 228644619700 in words is "two hundred twenty-eight billion, six hundred forty-four million, six hundred nineteen thousand, seven hundred".