228645700 has 18 divisors (see below), whose sum is σ = 496161386. Its totient is φ = 91458240.

The previous prime is 228645673. The next prime is 228645701. The reversal of 228645700 is 7546822.

It can be written as a sum of positive squares in 3 ways, for example, as 2383936 + 226261764 = 1544^2 + 15042^2 .

It is a super-2 number, since 2×228645700² = 104557712256980000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (228645701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1143129 + ... + 1143328.

Almost surely, 2^228645700 is an apocalyptic number.

228645700 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

228645700 is an abundant number, since it is smaller than the sum of its proper divisors (267515686).

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

228645700 is a wasteful number, since it uses less digits than its factorization.

228645700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2286471 (or 2286464 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 34.

The square root of 228645700 is about 15121.0350174847. The cubic root of 228645700 is about 611.4876348764.

The spelling of 228645700 in words is "two hundred twenty-eight million, six hundred forty-five thousand, seven hundred".