228864724 has 36 divisors (see below), whose sum is σ = 441573300. Its totient is φ = 103713280.

The previous prime is 228864719. The next prime is 228864733. The reversal of 228864724 is 427468822.

It can be written as a sum of positive squares in 2 ways, for example, as 79780624 + 149084100 = 8932^2 + 12210^2 .

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 245892 + ... + 246820.

It is an arithmetic number, because the mean of its divisors is an integer number (12265925).

Almost surely, 2^228864724 is an apocalyptic number.

It is an amenable number.

228864724 is a deficient number, since it is larger than the sum of its proper divisors (212708576).

228864724 is a wasteful number, since it uses less digits than its factorization.

228864724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1464 (or 1451 counting only the distinct ones).

The product of its digits is 344064, while the sum is 43.

The square root of 228864724 is about 15128.2756452941. The cubic root of 228864724 is about 611.6828243852.

The spelling of 228864724 in words is "two hundred twenty-eight million, eight hundred sixty-four thousand, seven hundred twenty-four".