128230011428 has 24 divisors (see below), whose sum is σ = 232309901880. Its totient is φ = 61858979840.

The previous prime is 128230011421. The next prime is 128230011431. The reversal of 128230011428 is 824110032821.

It can be written as a sum of positive squares in 4 ways, for example, as 98118044644 + 30111966784 = 313238^2 + 173528^2 .

It is a junction number, because it is equal to n+sod(n) for n = 128230011394 and 128230011403.

It is not an unprimeable number, because it can be changed into a prime (128230011421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 243293 + ... + 561828.

It is an arithmetic number, because the mean of its divisors is an integer number (9679579245).

Almost surely, 2^128230011428 is an apocalyptic number.

It is an amenable number.

128230011428 is a deficient number, since it is larger than the sum of its proper divisors (104079890452).

128230011428 is a wasteful number, since it uses less digits than its factorization.

128230011428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 806527 (or 806525 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 32.

The spelling of 128230011428 in words is "one hundred twenty-eight billion, two hundred thirty million, eleven thousand, four hundred twenty-eight".