228203155152 has 180 divisors, whose sum is σ = 749739902340. Its totient is φ = 64602510336.

The previous prime is 228203155129. The next prime is 228203155189. The reversal of 228203155152 is 251551302822.

228203155152 is a `hidden beast` number, since 2 + 2 + 8 + 20 + 31 + 551 + 52 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 174219420816 + 53983734336 = 417396^2 + 232344^2 .

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 620748 + ... + 917460.

Almost surely, 2^228203155152 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 228203155152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (374869951170).

228203155152 is an abundant number, since it is smaller than the sum of its proper divisors (521536747188).

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

228203155152 is a wasteful number, since it uses less digits than its factorization.

228203155152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296850 (or 296834 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 36.

Adding to 228203155152 its reverse (251551302822), we get a palindrome (479754457974).

The spelling of 228203155152 in words is "two hundred twenty-eight billion, two hundred three million, one hundred fifty-five thousand, one hundred fifty-two".