228531700 has 18 divisors (see below), whose sum is σ = 495914006. Its totient is φ = 91412640.

The previous prime is 228531671. The next prime is 228531701. The reversal of 228531700 is 7135822.

It can be written as a sum of positive squares in 3 ways, for example, as 34152336 + 194379364 = 5844^2 + 13942^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228531701) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1142559 + ... + 1142758.

Almost surely, 2^228531700 is an apocalyptic number.

228531700 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

228531700 is an abundant number, since it is smaller than the sum of its proper divisors (267382306).

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

228531700 is a wasteful number, since it uses less digits than its factorization.

228531700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2285331 (or 2285324 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 228531700 is about 15117.2649642718. The cubic root of 228531700 is about 611.3859911848.

The spelling of 228531700 in words is "two hundred twenty-eight million, five hundred thirty-one thousand, seven hundred".