128007746 has 16 divisors (see below), whose sum is σ = 197080128. Its totient is φ = 62336400.

The previous prime is 128007713. The next prime is 128007767. The reversal of 128007746 is 647700821.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6356 + ... + 17216.

It is an arithmetic number, because the mean of its divisors is an integer number (12317508).

Almost surely, 2^128007746 is an apocalyptic number.

128007746 is a deficient number, since it is larger than the sum of its proper divisors (69072382).

128007746 is a wasteful number, since it uses less digits than its factorization.

128007746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11017.

The product of its (nonzero) digits is 18816, while the sum is 35.

The square root of 128007746 is about 11314.0508218763. The cubic root of 128007746 is about 503.9785857409.

The spelling of 128007746 in words is "one hundred twenty-eight million, seven thousand, seven hundred forty-six".