228370728043 has 16 divisors (see below), whose sum is σ = 239918239744. Its totient is φ = 217158369120.

The previous prime is 228370728013. The next prime is 228370728071. The reversal of 228370728043 is 340827073822.

It is a cyclic number.

It is not a de Polignac number, because 228370728043 - 2²¹ = 228368630891 is a prime.

It is the 477882-nd Hogben number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 228370727984 and 228370728002.

It is not an unprimeable number, because it can be changed into a prime (228370728013) by changing a digit.

It is a nontrivial repunit in base 477881.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47853 + ... + 677518.

It is an arithmetic number, because the mean of its divisors is an integer number (14994889984).

Almost surely, 2^228370728043 is an apocalyptic number.

228370728043 is a deficient number, since it is larger than the sum of its proper divisors (11547511701).

228370728043 is a wasteful number, since it uses less digits than its factorization.

228370728043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 725602.

The product of its (nonzero) digits is 903168, while the sum is 46.

The spelling of 228370728043 in words is "two hundred twenty-eight billion, three hundred seventy million, seven hundred twenty-eight thousand, forty-three".