228515320 has 32 divisors (see below), whose sum is σ = 560902320. Its totient is φ = 83096320.

The previous prime is 228515311. The next prime is 228515369. The reversal of 228515320 is 23515822.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 259237 + ... + 260116.

Almost surely, 2^228515320 is an apocalyptic number.

228515320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

228515320 is an abundant number, since it is smaller than the sum of its proper divisors (332387000).

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

228515320 is a wasteful number, since it uses less digits than its factorization.

228515320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 519375 (or 519371 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 228515320 is about 15116.7231898980. The cubic root of 228515320 is about 611.3713838140.

The spelling of 228515320 in words is "two hundred twenty-eight million, five hundred fifteen thousand, three hundred twenty".