228703520 has 24 divisors (see below), whose sum is σ = 540312444. Its totient is φ = 91481344.

The previous prime is 228703487. The next prime is 228703577. The reversal of 228703520 is 25307822.

It can be written as a sum of positive squares in 2 ways, for example, as 220106896 + 8596624 = 14836^2 + 2932^2 .

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 3 ways as a sum of consecutive naturals, for example, 714539 + ... + 714858.

Almost surely, 2^228703520 is an apocalyptic number.

228703520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

228703520 is an abundant number, since it is smaller than the sum of its proper divisors (311608924).

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

228703520 is a wasteful number, since it uses less digits than its factorization.

228703520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1429412 (or 1429404 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 228703520 is about 15122.9468027895. The cubic root of 228703520 is about 611.5391749304.

The spelling of 228703520 in words is "two hundred twenty-eight million, seven hundred three thousand, five hundred twenty".