128498473 has 4 divisors (see below), whose sum is σ = 129510400. Its totient is φ = 127486548.

The previous prime is 128498471. The next prime is 128498483. The reversal of 128498473 is 374894821.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 374894821 = 7 ⋅53556403.

It is a cyclic number.

It is not a de Polignac number, because 128498473 - 2¹ = 128498471 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128498471) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 505773 + ... + 506026.

It is an arithmetic number, because the mean of its divisors is an integer number (32377600).

Almost surely, 2^128498473 is an apocalyptic number.

It is an amenable number.

128498473 is a deficient number, since it is larger than the sum of its proper divisors (1011927).

128498473 is a wasteful number, since it uses less digits than its factorization.

128498473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1011926.

The product of its digits is 387072, while the sum is 46.

The square root of 128498473 is about 11335.7166954719. The cubic root of 128498473 is about 504.6217773810.

The spelling of 128498473 in words is "one hundred twenty-eight million, four hundred ninety-eight thousand, four hundred seventy-three".