228363840 has 112 divisors (see below), whose sum is σ = 805647360. Its totient is φ = 60894720.

The previous prime is 228363833. The next prime is 228363859. The reversal of 228363840 is 48363822.

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

It is a junction number, because it is equal to n+sod(n) for n = 228363795 and 228363804.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4576 + ... + 21855.

It is an arithmetic number, because the mean of its divisors is an integer number (7193280).

Almost surely, 2^228363840 is an apocalyptic number.

228363840 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 228363840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (402823680).

228363840 is an abundant number, since it is smaller than the sum of its proper divisors (577283520).

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

228363840 is a wasteful number, since it uses less digits than its factorization.

228363840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26457 (or 26441 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 36.

The square root of 228363840 is about 15111.7120141961. The cubic root of 228363840 is about 611.2362637585.

The spelling of 228363840 in words is "two hundred twenty-eight million, three hundred sixty-three thousand, eight hundred forty".