128028902 has 16 divisors (see below), whose sum is σ = 201513312. Its totient is φ = 60888960.

The previous prime is 128028889. The next prime is 128028907. The reversal of 128028902 is 209820821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128028907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 638 + ... + 16014.

It is an arithmetic number, because the mean of its divisors is an integer number (12594582).

Almost surely, 2^128028902 is an apocalyptic number.

128028902 is a deficient number, since it is larger than the sum of its proper divisors (73484410).

128028902 is a wasteful number, since it uses less digits than its factorization.

128028902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15583.

The product of its (nonzero) digits is 4608, while the sum is 32.

The square root of 128028902 is about 11314.9857269022. The cubic root of 128028902 is about 504.0063486015.

The spelling of 128028902 in words is "one hundred twenty-eight million, twenty-eight thousand, nine hundred two".