128902894 has 16 divisors (see below), whose sum is σ = 199112400. Its totient is φ = 62541504.

The previous prime is 128902877. The next prime is 128902909. The reversal of 128902894 is 498209821.

It is a self number, because there is not a number n which added to its sum of digits gives 128902894.

It is a congruent number.

It is an unprimeable number.

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, 28137 + ... + 32395.

It is an arithmetic number, because the mean of its divisors is an integer number (12444525).

Almost surely, 2^128902894 is an apocalyptic number.

128902894 is a deficient number, since it is larger than the sum of its proper divisors (70209506).

128902894 is a wasteful number, since it uses less digits than its factorization.

128902894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4707.

The product of its (nonzero) digits is 82944, while the sum is 43.

The square root of 128902894 is about 11353.5410335278. The cubic root of 128902894 is about 505.1506187332.

The spelling of 128902894 in words is "one hundred twenty-eight million, nine hundred two thousand, eight hundred ninety-four".