228495940 has 12 divisors (see below), whose sum is σ = 479841516. Its totient is φ = 91398368.

The previous prime is 228495923. The next prime is 228495941. The reversal of 228495940 is 49594822.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 74338884 + 154157056 = 8622^2 + 12416^2 .

It is not an unprimeable number, because it can be changed into a prime (228495941) 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 3 ways as a sum of consecutive naturals, for example, 5712379 + ... + 5712418.

It is an arithmetic number, because the mean of its divisors is an integer number (39986793).

Almost surely, 2^228495940 is an apocalyptic number.

228495940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

228495940 is an abundant number, since it is smaller than the sum of its proper divisors (251345576).

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

228495940 is a wasteful number, since it uses less digits than its factorization.

228495940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11424806 (or 11424804 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 43.

The square root of 228495940 is about 15116.0821643705. The cubic root of 228495940 is about 611.3541001991.

The spelling of 228495940 in words is "two hundred twenty-eight million, four hundred ninety-five thousand, nine hundred forty".