128964998 has 8 divisors (see below), whose sum is σ = 197946408. Its totient is φ = 62982864.

The previous prime is 128964949. The next prime is 128965003. The reversal of 128964998 is 899469821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 749711 + ... + 749882.

It is an arithmetic number, because the mean of its divisors is an integer number (24743301).

Almost surely, 2^128964998 is an apocalyptic number.

128964998 is a deficient number, since it is larger than the sum of its proper divisors (68981410).

128964998 is a wasteful number, since it uses less digits than its factorization.

128964998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1499638.

The product of its digits is 2239488, while the sum is 56.

The square root of 128964998 is about 11356.2757099324. The cubic root of 128964998 is about 505.2317310501.

The spelling of 128964998 in words is "one hundred twenty-eight million, nine hundred sixty-four thousand, nine hundred ninety-eight".