228897180 has 288 divisors, whose sum is σ = 805109760. Its totient is φ = 52254720.

The previous prime is 228897157. The next prime is 228897187. The reversal of 228897180 is 81798822.

It is a happy number.

228897180 is digitally balanced in base 2, base 3 and base 9, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (45).

228897180 is strictly pandigital in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228897187) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1802277 + ... + 1802403.

It is an arithmetic number, because the mean of its divisors is an integer number (2795520).

Almost surely, 2^228897180 is an apocalyptic number.

228897180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 228897180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (402554880).

228897180 is an abundant number, since it is smaller than the sum of its proper divisors (576212580).

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

228897180 is a wasteful number, since it uses less digits than its factorization.

228897180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209 (or 204 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 45.

The square root of 228897180 is about 15129.3483005713. The cubic root of 228897180 is about 611.7117378834.

The spelling of 228897180 in words is "two hundred twenty-eight million, eight hundred ninety-seven thousand, one hundred eighty".