228242259720 has 48 divisors (see below), whose sum is σ = 741787345260. Its totient is φ = 60864602496.

The previous prime is 228242259701. The next prime is 228242259733. The reversal of 228242259720 is 27952242822.

It can be written as a sum of positive squares in 2 ways, for example, as 201566877444 + 26675382276 = 448962^2 + 163326^2 .

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 317002779 + ... + 317003498.

Almost surely, 2^228242259720 is an apocalyptic number.

228242259720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

228242259720 is an abundant number, since it is smaller than the sum of its proper divisors (513545085540).

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

228242259720 is a wasteful number, since it uses less digits than its factorization.

228242259720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 634006294 (or 634006287 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 45.

The spelling of 228242259720 in words is "two hundred twenty-eight billion, two hundred forty-two million, two hundred fifty-nine thousand, seven hundred twenty".