128788473 has 16 divisors (see below), whose sum is σ = 188991936. Its totient is φ = 77360640.

The previous prime is 128788469. The next prime is 128788493. The reversal of 128788473 is 374887821.

It is a happy number.

It is not a de Polignac number, because 128788473 - 2² = 128788469 is a prime.

It is not an unprimeable number, because it can be changed into a prime (128788423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13540 + ... + 20997.

It is an arithmetic number, because the mean of its divisors is an integer number (11811996).

Almost surely, 2^128788473 is an apocalyptic number.

It is an amenable number.

128788473 is a deficient number, since it is larger than the sum of its proper divisors (60203463).

128788473 is a wasteful number, since it uses less digits than its factorization.

128788473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34664.

The product of its digits is 602112, while the sum is 48.

The square root of 128788473 is about 11348.5009142177. The cubic root of 128788473 is about 505.0011083856.

The spelling of 128788473 in words is "one hundred twenty-eight million, seven hundred eighty-eight thousand, four hundred seventy-three".