128800016 has 10 divisors (see below), whose sum is σ = 249550062. Its totient is φ = 64400000.

The previous prime is 128800013. The next prime is 128800019. The reversal of 128800016 is 610008821.

It is an interprime number because it is at equal distance from previous prime (128800013) and next prime (128800019).

It can be written as a sum of positive squares in only one way, i.e., 67897600 + 60902416 = 8240^2 + 7804^2 .

It is not an unprimeable number, because it can be changed into a prime (128800013) by changing a digit.

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 as a sum of consecutive naturals, namely, 4024985 + ... + 4025016.

Almost surely, 2^128800016 is an apocalyptic number.

128800016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

128800016 is a deficient number, since it is larger than the sum of its proper divisors (120750046).

128800016 is an equidigital number, since it uses as much as digits as its factorization.

128800016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8050009 (or 8050003 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 26.

The square root of 128800016 is about 11349.0094721962. The cubic root of 128800016 is about 505.0161952784.

Adding to 128800016 its reverse (610008821), we get a palindrome (738808837).

The spelling of 128800016 in words is "one hundred twenty-eight million, eight hundred thousand, sixteen".