128711446 has 8 divisors (see below), whose sum is σ = 193117824. Its totient is φ = 64338840.

The previous prime is 128711441. The next prime is 128711447. The reversal of 128711446 is 644117821.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128711441) 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, 6091 + ... + 17161.

It is an arithmetic number, because the mean of its divisors is an integer number (24139728).

Almost surely, 2^128711446 is an apocalyptic number.

128711446 is a deficient number, since it is larger than the sum of its proper divisors (64406378).

128711446 is a wasteful number, since it uses less digits than its factorization.

128711446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16886.

The product of its digits is 10752, while the sum is 34.

The square root of 128711446 is about 11345.1066984846. The cubic root of 128711446 is about 504.9004097309.

The spelling of 128711446 in words is "one hundred twenty-eight million, seven hundred eleven thousand, four hundred forty-six".