128273392 has 40 divisors (see below), whose sum is σ = 279294624. Its totient is φ = 56626944.

The previous prime is 128273363. The next prime is 128273393. The reversal of 128273392 is 293372821.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128273393) 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, 8623 + ... + 18190.

Almost surely, 2^128273392 is an apocalyptic number.

It is an amenable number.

128273392 is an abundant number, since it is smaller than the sum of its proper divisors (151021232).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

128273392 is a wasteful number, since it uses less digits than its factorization.

128273392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26857 (or 26851 counting only the distinct ones).

The product of its digits is 36288, while the sum is 37.

The square root of 128273392 is about 11325.7843878471. The cubic root of 128273392 is about 504.3269693231.

The spelling of 128273392 in words is "one hundred twenty-eight million, two hundred seventy-three thousand, three hundred ninety-two".