128474786 has 16 divisors (see below), whose sum is σ = 210770208. Its totient is φ = 58248000.

The previous prime is 128474783. The next prime is 128474791. The reversal of 128474786 is 687474821.

It is a self number, because there is not a number n which added to its sum of digits gives 128474786.

It is not an unprimeable number, because it can be changed into a prime (128474783) 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, 1541 + ... + 16103.

It is an arithmetic number, because the mean of its divisors is an integer number (13173138).

Almost surely, 2^128474786 is an apocalyptic number.

128474786 is a deficient number, since it is larger than the sum of its proper divisors (82295422).

128474786 is a wasteful number, since it uses less digits than its factorization.

128474786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14977.

The product of its digits is 602112, while the sum is 47.

The square root of 128474786 is about 11334.6718523299. The cubic root of 128474786 is about 504.5907686842.

The spelling of 128474786 in words is "one hundred twenty-eight million, four hundred seventy-four thousand, seven hundred eighty-six".