228690180 has 72 divisors (see below), whose sum is σ = 695822400. Its totient is φ = 60796992.

The previous prime is 228690157. The next prime is 228690223. The reversal of 228690180 is 81096822.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 62851 + ... + 66389.

It is an arithmetic number, because the mean of its divisors is an integer number (9664200).

Almost surely, 2^228690180 is an apocalyptic number.

228690180 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 228690180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (347911200).

228690180 is an abundant number, since it is smaller than the sum of its proper divisors (467132220).

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

228690180 is a wasteful number, since it uses less digits than its factorization.

228690180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3913 (or 3908 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 228690180 is about 15122.5057447501. The cubic root of 228690180 is about 611.5272845855.

The spelling of 228690180 in words is "two hundred twenty-eight million, six hundred ninety thousand, one hundred eighty".