128934995 has 16 divisors (see below), whose sum is σ = 177398208. Its totient is φ = 88126080.

The previous prime is 128934991. The next prime is 128935043. The reversal of 128934995 is 599439821.

It is a happy number.

It is not a de Polignac number, because 128934995 - 2² = 128934991 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128934991) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5285 + ... + 16905.

It is an arithmetic number, because the mean of its divisors is an integer number (11087388).

Almost surely, 2^128934995 is an apocalyptic number.

128934995 is a deficient number, since it is larger than the sum of its proper divisors (48463213).

128934995 is a wasteful number, since it uses less digits than its factorization.

128934995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11950.

The product of its digits is 699840, while the sum is 50.

The square root of 128934995 is about 11354.9546454400. The cubic root of 128934995 is about 505.1925482136.

The spelling of 128934995 in words is "one hundred twenty-eight million, nine hundred thirty-four thousand, nine hundred ninety-five".