128127946 has 16 divisors (see below), whose sum is σ = 203776776. Its totient is φ = 60212736.

The previous prime is 128127907. The next prime is 128127971. The reversal of 128127946 is 649721821.

It can be written as a sum of positive squares in 4 ways, for example, as 127938721 + 189225 = 11311^2 + 435^2 .

It is a junction number, because it is equal to n+sod(n) for n = 128127899 and 128127908.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27670 + ... + 31966.

Almost surely, 2^128127946 is an apocalyptic number.

128127946 is a deficient number, since it is larger than the sum of its proper divisors (75648830).

128127946 is a wasteful number, since it uses less digits than its factorization.

128127946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5193.

The product of its digits is 48384, while the sum is 40.

The square root of 128127946 is about 11319.3615544341. The cubic root of 128127946 is about 504.1362826425.

The spelling of 128127946 in words is "one hundred twenty-eight million, one hundred twenty-seven thousand, nine hundred forty-six".