128557373 has 16 divisors (see below), whose sum is σ = 153722880. Its totient is φ = 105117936.

The previous prime is 128557367. The next prime is 128557393. The reversal of 128557373 is 373755821.

It is not a de Polignac number, because 128557373 - 2¹² = 128553277 is a prime.

It is a super-2 number, since 2×128557373² = 33053996305322258, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 128557373.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128557313) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76286 + ... + 77952.

It is an arithmetic number, because the mean of its divisors is an integer number (9607680).

Almost surely, 2^128557373 is an apocalyptic number.

It is an amenable number.

128557373 is a deficient number, since it is larger than the sum of its proper divisors (25165507).

128557373 is a wasteful number, since it uses less digits than its factorization.

128557373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2176.

The product of its digits is 176400, while the sum is 41.

The square root of 128557373 is about 11338.3143808945. The cubic root of 128557373 is about 504.6988669679.

The spelling of 128557373 in words is "one hundred twenty-eight million, five hundred fifty-seven thousand, three hundred seventy-three".