128384974 has 8 divisors (see below), whose sum is σ = 196211160. Its totient is φ = 62981256.

The previous prime is 128384959. The next prime is 128384989. The reversal of 128384974 is 479483821.

It is an interprime number because it is at equal distance from previous prime (128384959) and next prime (128384989).

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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 605484 + ... + 605695.

It is an arithmetic number, because the mean of its divisors is an integer number (24526395).

Almost surely, 2^128384974 is an apocalyptic number.

128384974 is a deficient number, since it is larger than the sum of its proper divisors (67826186).

128384974 is a wasteful number, since it uses less digits than its factorization.

128384974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1211234.

The product of its digits is 387072, while the sum is 46.

The square root of 128384974 is about 11330.7093334883. The cubic root of 128384974 is about 504.4731609892.

The spelling of 128384974 in words is "one hundred twenty-eight million, three hundred eighty-four thousand, nine hundred seventy-four".