228650820 has 96 divisors (see below), whose sum is σ = 671956992. Its totient is φ = 57982848.

The previous prime is 228650803. The next prime is 228650827. The reversal of 228650820 is 28056822.

228650820 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (228650827) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 307369 + ... + 308111.

It is an arithmetic number, because the mean of its divisors is an integer number (6999552).

Almost surely, 2^228650820 is an apocalyptic number.

228650820 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 228650820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (335978496).

228650820 is an abundant number, since it is smaller than the sum of its proper divisors (443306172).

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

228650820 is a wasteful number, since it uses less digits than its factorization.

228650820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1001 (or 999 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 33.

The square root of 228650820 is about 15121.2043171171. The cubic root of 228650820 is about 611.4921991335.

The spelling of 228650820 in words is "two hundred twenty-eight million, six hundred fifty thousand, eight hundred twenty".