228618580 has 48 divisors (see below), whose sum is σ = 490976640. Its totient is φ = 89398400.

The previous prime is 228618517. The next prime is 228618589. The reversal of 228618580 is 85816822.

It is a happy number.

228618580 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228618589) 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, 185406 + ... + 186634.

It is an arithmetic number, because the mean of its divisors is an integer number (10228680).

Almost surely, 2^228618580 is an apocalyptic number.

228618580 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

228618580 is an abundant number, since it is smaller than the sum of its proper divisors (262358060).

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

228618580 is a wasteful number, since it uses less digits than its factorization.

228618580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1440 (or 1438 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 40.

The square root of 228618580 is about 15120.1382268814. The cubic root of 228618580 is about 611.4634574403.

The spelling of 228618580 in words is "two hundred twenty-eight million, six hundred eighteen thousand, five hundred eighty".