228493455432 has 128 divisors (see below), whose sum is σ = 663172583040. Its totient is φ = 64836423680.

The previous prime is 228493455389. The next prime is 228493455433. The reversal of 228493455432 is 234554394822.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (228493455433) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 754918 + ... + 1013354.

It is an arithmetic number, because the mean of its divisors is an integer number (5181035805).

Almost surely, 2^228493455432 is an apocalyptic number.

228493455432 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 228493455432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (331586291520).

228493455432 is an abundant number, since it is smaller than the sum of its proper divisors (434679127608).

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

228493455432 is a wasteful number, since it uses less digits than its factorization.

228493455432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258671 (or 258667 counting only the distinct ones).

The product of its digits is 8294400, while the sum is 51.

It can be divided in two parts, 2284934 and 55432, that added together give a triangular number (2340366 = T₂₁₆₃).

The spelling of 228493455432 in words is "two hundred twenty-eight billion, four hundred ninety-three million, four hundred fifty-five thousand, four hundred thirty-two".