128036428 has 36 divisors (see below), whose sum is σ = 249231360. Its totient is φ = 57485376.

The previous prime is 128036351. The next prime is 128036429. The reversal of 128036428 is 824630821.

It is a junction number, because it is equal to n+sod(n) for n = 128036393 and 128036402.

It is not an unprimeable number, because it can be changed into a prime (128036429) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22453 + ... + 27571.

Almost surely, 2^128036428 is an apocalyptic number.

It is an amenable number.

128036428 is a deficient number, since it is larger than the sum of its proper divisors (121194932).

128036428 is a wasteful number, since it uses less digits than its factorization.

128036428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5186 (or 5171 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 34.

The square root of 128036428 is about 11315.3182898229. The cubic root of 128036428 is about 504.0162241775.

The spelling of 128036428 in words is "one hundred twenty-eight million, thirty-six thousand, four hundred twenty-eight".