128081914 has 8 divisors (see below), whose sum is σ = 193098708. Its totient is φ = 63715680.

The previous prime is 128081911. The next prime is 128081923. The reversal of 128081914 is 419180821.

It can be written as a sum of positive squares in 2 ways, for example, as 109307025 + 18774889 = 10455^2 + 4333^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 128081914.

It is not an unprimeable number, because it can be changed into a prime (128081911) 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, 162147 + ... + 162934.

Almost surely, 2^128081914 is an apocalyptic number.

128081914 is a deficient number, since it is larger than the sum of its proper divisors (65016794).

128081914 is a wasteful number, since it uses less digits than its factorization.

128081914 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325280.

The product of its (nonzero) digits is 4608, while the sum is 34.

The square root of 128081914 is about 11317.3280415476. The cubic root of 128081914 is about 504.0759024217.

The spelling of 128081914 in words is "one hundred twenty-eight million, eighty-one thousand, nine hundred fourteen".