228332740 has 12 divisors (see below), whose sum is σ = 479498796. Its totient is φ = 91333088.

The previous prime is 228332693. The next prime is 228332749. The reversal of 228332740 is 47233822.

It can be written as a sum of positive squares in 2 ways, for example, as 172501956 + 55830784 = 13134^2 + 7472^2 .

It is not an unprimeable number, because it can be changed into a prime (228332749) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5708299 + ... + 5708338.

It is an arithmetic number, because the mean of its divisors is an integer number (39958233).

Almost surely, 2^228332740 is an apocalyptic number.

228332740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

228332740 is an abundant number, since it is smaller than the sum of its proper divisors (251166056).

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

228332740 is a wasteful number, since it uses less digits than its factorization.

228332740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11416646 (or 11416644 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 31.

The square root of 228332740 is about 15110.6829759611. The cubic root of 228332740 is about 611.2085151873.

The spelling of 228332740 in words is "two hundred twenty-eight million, three hundred thirty-two thousand, seven hundred forty".