228220564 has 48 divisors (see below), whose sum is σ = 474586560. Its totient is φ = 94659840.

The previous prime is 228220561. The next prime is 228220583. The reversal of 228220564 is 465022822.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228220561) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48667 + ... + 53149.

It is an arithmetic number, because the mean of its divisors is an integer number (9887220).

Almost surely, 2^228220564 is an apocalyptic number.

It is an amenable number.

228220564 is an abundant number, since it is smaller than the sum of its proper divisors (246365996).

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

228220564 is a wasteful number, since it uses less digits than its factorization.

228220564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4600 (or 4598 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 31.

The square root of 228220564 is about 15106.9707089145. The cubic root of 228220564 is about 611.1084066682.

The spelling of 228220564 in words is "two hundred twenty-eight million, two hundred twenty thousand, five hundred sixty-four".