228102736 has 20 divisors (see below), whose sum is σ = 467946612. Its totient is φ = 107342336.

The previous prime is 228102731. The next prime is 228102761. The reversal of 228102736 is 637201822.

It can be written as a sum of positive squares in 2 ways, for example, as 117852736 + 110250000 = 10856^2 + 10500^2 .

It is a junction number, because it is equal to n+sod(n) for n = 228102698 and 228102707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228102731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 419035 + ... + 419578.

Almost surely, 2^228102736 is an apocalyptic number.

It is an amenable number.

228102736 is an abundant number, since it is smaller than the sum of its proper divisors (239843876).

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

228102736 is a wasteful number, since it uses less digits than its factorization.

228102736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 838638 (or 838632 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 228102736 is about 15103.0704163094. The cubic root of 228102736 is about 611.0032188394.

The spelling of 228102736 in words is "two hundred twenty-eight million, one hundred two thousand, seven hundred thirty-six".