228621560 has 32 divisors (see below), whose sum is σ = 514987200. Its totient is φ = 91344000.

The previous prime is 228621553. The next prime is 228621571. The reversal of 228621560 is 65126822.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38810 + ... + 44310.

It is an arithmetic number, because the mean of its divisors is an integer number (16093350).

Almost surely, 2^228621560 is an apocalyptic number.

228621560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

228621560 is an abundant number, since it is smaller than the sum of its proper divisors (286365640).

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

228621560 is a wasteful number, since it uses less digits than its factorization.

228621560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6551 (or 6547 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 228621560 is about 15120.2367706329. The cubic root of 228621560 is about 611.4661141990.

The spelling of 228621560 in words is "two hundred twenty-eight million, six hundred twenty-one thousand, five hundred sixty".