128474533 has 6 divisors (see below), whose sum is σ = 141215942. Its totient is φ = 116794920.

The previous prime is 128474531. The next prime is 128474543. The reversal of 128474533 is 335474821.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 110817729 + 17656804 = 10527^2 + 4202^2 .

It is not a de Polignac number, because 128474533 - 2¹ = 128474531 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 128474492 and 128474501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128474531) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 530766 + ... + 531007.

Almost surely, 2^128474533 is an apocalyptic number.

It is an amenable number.

128474533 is a deficient number, since it is larger than the sum of its proper divisors (12741409).

128474533 is a wasteful number, since it uses less digits than its factorization.

128474533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1061795 (or 1061784 counting only the distinct ones).

The product of its digits is 80640, while the sum is 37.

The square root of 128474533 is about 11334.6606918778. The cubic root of 128474533 is about 504.5904374609.

The spelling of 128474533 in words is "one hundred twenty-eight million, four hundred seventy-four thousand, five hundred thirty-three".