128200347 has 24 divisors (see below), whose sum is σ = 208767440. Its totient is φ = 77695200.

The previous prime is 128200327. The next prime is 128200357. The reversal of 128200347 is 743002821.

It is not a de Polignac number, because 128200347 - 2¹⁵ = 128167579 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 128200347.

It is not an unprimeable number, because it can be changed into a prime (128200307) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16354 + ... + 22887.

Almost surely, 2^128200347 is an apocalyptic number.

128200347 is a deficient number, since it is larger than the sum of its proper divisors (80567093).

128200347 is a wasteful number, since it uses less digits than its factorization.

128200347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39272 (or 39255 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 128200347 is about 11322.5592071757. The cubic root of 128200347 is about 504.2312218532.

The spelling of 128200347 in words is "one hundred twenty-eight million, two hundred thousand, three hundred forty-seven".