128368807 has 8 divisors (see below), whose sum is σ = 154428800. Its totient is φ = 104239224.

The previous prime is 128368789. The next prime is 128368829. The reversal of 128368807 is 708863821.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-128368807 is a prime.

It is a super-2 number, since 2×128368807² = 32957101221206498, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128368847) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 482457 + ... + 482722.

It is an arithmetic number, because the mean of its divisors is an integer number (19303600).

Almost surely, 2^128368807 is an apocalyptic number.

128368807 is a deficient number, since it is larger than the sum of its proper divisors (26059993).

128368807 is an equidigital number, since it uses as much as digits as its factorization.

128368807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 965205.

The product of its (nonzero) digits is 129024, while the sum is 43.

The square root of 128368807 is about 11329.9958958510. The cubic root of 128368807 is about 504.4519846794.

The spelling of 128368807 in words is "one hundred twenty-eight million, three hundred sixty-eight thousand, eight hundred seven".