228342040 has 32 divisors (see below), whose sum is σ = 525721680. Its totient is φ = 89212032.

The previous prime is 228342017. The next prime is 228342041. The reversal of 228342040 is 40243822.

It is a junction number, because it is equal to n+sod(n) for n = 228341996 and 228342014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228342041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64659 + ... + 68098.

Almost surely, 2^228342040 is an apocalyptic number.

228342040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

228342040 is an abundant number, since it is smaller than the sum of its proper divisors (297379640).

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

228342040 is a wasteful number, since it uses less digits than its factorization.

228342040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132811 (or 132807 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 25.

The square root of 228342040 is about 15110.9907021347. The cubic root of 228342040 is about 611.2168132556.

Adding to 228342040 its reverse (40243822), we get a palindrome (268585862).

The spelling of 228342040 in words is "two hundred twenty-eight million, three hundred forty-two thousand, forty".