128407474 has 32 divisors (see below), whose sum is σ = 211821120. Its totient is φ = 58024512.

The previous prime is 128407471. The next prime is 128407481. The reversal of 128407474 is 474704821.

It is not an unprimeable number, because it can be changed into a prime (128407471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 338617 + ... + 338995.

It is an arithmetic number, because the mean of its divisors is an integer number (6619410).

Almost surely, 2^128407474 is an apocalyptic number.

128407474 is a deficient number, since it is larger than the sum of its proper divisors (83413646).

128407474 is a wasteful number, since it uses less digits than its factorization.

128407474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 634.

The product of its (nonzero) digits is 50176, while the sum is 37.

The square root of 128407474 is about 11331.7021669297. The cubic root of 128407474 is about 504.5026296068.

It can be divided in two parts, 128407 and 474, that added together give a square (128881 = 359²).

The spelling of 128407474 in words is "one hundred twenty-eight million, four hundred seven thousand, four hundred seventy-four".