128703297 has 8 divisors (see below), whose sum is σ = 172839520. Its totient is φ = 85184640.

The previous prime is 128703269. The next prime is 128703301. The reversal of 128703297 is 792307821.

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

It is not a de Polignac number, because 128703297 - 2⁶ = 128703233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128703217) 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, 153904 + ... + 154737.

It is an arithmetic number, because the mean of its divisors is an integer number (21604940).

Almost surely, 2^128703297 is an apocalyptic number.

It is an amenable number.

128703297 is a deficient number, since it is larger than the sum of its proper divisors (44136223).

128703297 is a wasteful number, since it uses less digits than its factorization.

128703297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308783.

The product of its (nonzero) digits is 42336, while the sum is 39.

The square root of 128703297 is about 11344.7475511798. The cubic root of 128703297 is about 504.8897540604.

The spelling of 128703297 in words is "one hundred twenty-eight million, seven hundred three thousand, two hundred ninety-seven".