128370047 has 8 divisors (see below), whose sum is σ = 140511840. Its totient is φ = 116552160.

The previous prime is 128370031. The next prime is 128370049. The reversal of 128370047 is 740073821.

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 not a de Polignac number, because 128370047 - 2⁴ = 128370031 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 128369995 and 128370022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128370049) 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, 80147 + ... + 81732.

It is an arithmetic number, because the mean of its divisors is an integer number (17563980).

Almost surely, 2^128370047 is an apocalyptic number.

128370047 is a deficient number, since it is larger than the sum of its proper divisors (12141793).

128370047 is a wasteful number, since it uses less digits than its factorization.

128370047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161953.

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 128370047 is about 11330.0506177157. The cubic root of 128370047 is about 504.4536089536.

The spelling of 128370047 in words is "one hundred twenty-eight million, three hundred seventy thousand, forty-seven".