128714478 has 8 divisors (see below), whose sum is σ = 257428968. Its totient is φ = 42904824.

The previous prime is 128714471. The next prime is 128714483. The reversal of 128714478 is 874417821.

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

128714478 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128714471) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10726201 + ... + 10726212.

It is an arithmetic number, because the mean of its divisors is an integer number (32178621).

Almost surely, 2^128714478 is an apocalyptic number.

128714478 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

128714478 is a wasteful number, since it uses less digits than its factorization.

128714478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21452418.

The product of its digits is 100352, while the sum is 42.

The square root of 128714478 is about 11345.2403235894. The cubic root of 128714478 is about 504.9043742735.

The spelling of 128714478 in words is "one hundred twenty-eight million, seven hundred fourteen thousand, four hundred seventy-eight".