228655240 has 64 divisors (see below), whose sum is σ = 567648000. Its totient is φ = 82199040.

The previous prime is 228655201. The next prime is 228655247. The reversal of 228655240 is 42556822.

It is a junction number, because it is equal to n+sod(n) for n = 228655196 and 228655205.

It is not an unprimeable number, because it can be changed into a prime (228655247) 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, 36241 + ... + 42079.

It is an arithmetic number, because the mean of its divisors is an integer number (8869500).

Almost surely, 2^228655240 is an apocalyptic number.

228655240 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 228655240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (283824000).

228655240 is an abundant number, since it is smaller than the sum of its proper divisors (338992760).

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

228655240 is a wasteful number, since it uses less digits than its factorization.

228655240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5950 (or 5946 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 34.

The square root of 228655240 is about 15121.3504687908. The cubic root of 228655240 is about 611.4961393164.

The spelling of 228655240 in words is "two hundred twenty-eight million, six hundred fifty-five thousand, two hundred forty".