228771646900 has 36 divisors (see below), whose sum is σ = 525636505548. Its totient is φ = 86125795840.

The previous prime is 228771646879. The next prime is 228771646907. The reversal of 228771646900 is 9646177822.

It can be written as a sum of positive squares in 6 ways, for example, as 5226133264 + 223545513636 = 72292^2 + 472806^2 .

It is a super-2 number, since 2×228771646900² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228771646907) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 67284079 + ... + 67287478.

It is an arithmetic number, because the mean of its divisors is an integer number (14601014043).

Almost surely, 2^228771646900 is an apocalyptic number.

228771646900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

228771646900 is an abundant number, since it is smaller than the sum of its proper divisors (296864858648).

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

228771646900 is a wasteful number, since it uses less digits than its factorization.

228771646900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134571588 (or 134571581 counting only the distinct ones).

The product of its (nonzero) digits is 2032128, while the sum is 52.

The spelling of 228771646900 in words is "two hundred twenty-eight billion, seven hundred seventy-one million, six hundred forty-six thousand, nine hundred".