228363240 has 64 divisors (see below), whose sum is σ = 782962560. Its totient is φ = 52197120.

The previous prime is 228363221. The next prime is 228363241. The reversal of 228363240 is 42363822.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 228363198 and 228363207.

It is not an unprimeable number, because it can be changed into a prime (228363241) 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, 135091 + ... + 136770.

It is an arithmetic number, because the mean of its divisors is an integer number (12233790).

Almost surely, 2^228363240 is an apocalyptic number.

228363240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

228363240 is an abundant number, since it is smaller than the sum of its proper divisors (554599320).

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

228363240 is a wasteful number, since it uses less digits than its factorization.

228363240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271882 (or 271878 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 30.

The square root of 228363240 is about 15111.6921620314. The cubic root of 228363240 is about 611.2357284401.

The spelling of 228363240 in words is "two hundred twenty-eight million, three hundred sixty-three thousand, two hundred forty".