128896745 has 8 divisors (see below), whose sum is σ = 155894784. Its totient is φ = 102304944.

The previous prime is 128896711. The next prime is 128896799. The reversal of 128896745 is 547698821.

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

It is a cyclic number.

It is not a de Polignac number, because 128896745 - 2⁸ = 128896489 is a prime.

It is a super-2 number, since 2×128896745² = 33228741743190050, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 128896693 and 128896702.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100859 + ... + 102128.

It is an arithmetic number, because the mean of its divisors is an integer number (19486848).

Almost surely, 2^128896745 is an apocalyptic number.

It is an amenable number.

128896745 is a deficient number, since it is larger than the sum of its proper divisors (26998039).

128896745 is a wasteful number, since it uses less digits than its factorization.

128896745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203119.

The product of its digits is 967680, while the sum is 50.

The square root of 128896745 is about 11353.2702337256. The cubic root of 128896745 is about 505.1425862770.

The spelling of 128896745 in words is "one hundred twenty-eight million, eight hundred ninety-six thousand, seven hundred forty-five".