128302834 has 12 divisors (see below), whose sum is σ = 211541022. Its totient is φ = 58319360.

The previous prime is 128302819. The next prime is 128302843. The reversal of 128302834 is 438203821.

It can be written as a sum of positive squares in only one way, i.e., 127622209 + 680625 = 11297^2 + 825^2 .

It is a junction number, because it is equal to n+sod(n) for n = 128302796 and 128302805.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 264847 + ... + 265330.

Almost surely, 2^128302834 is an apocalyptic number.

128302834 is a deficient number, since it is larger than the sum of its proper divisors (83238188).

128302834 is a wasteful number, since it uses less digits than its factorization.

128302834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 530201 (or 530190 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 128302834 is about 11327.0840907976. The cubic root of 128302834 is about 504.3655516524.

The spelling of 128302834 in words is "one hundred twenty-eight million, three hundred two thousand, eight hundred thirty-four".