128190357 has 10 divisors (see below), whose sum is σ = 191494358. Its totient is φ = 85460184.

The previous prime is 128190331. The next prime is 128190373. The reversal of 128190357 is 753091821.

It can be written as a sum of positive squares in only one way, i.e., 102697956 + 25492401 = 10134^2 + 5049^2 .

It is not a de Polignac number, because 128190357 - 2¹¹ = 128188309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128190457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 791218 + ... + 791379.

Almost surely, 2^128190357 is an apocalyptic number.

It is an amenable number.

128190357 is a deficient number, since it is larger than the sum of its proper divisors (63304001).

128190357 is an equidigital number, since it uses as much as digits as its factorization.

128190357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1582609 (or 1582600 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 36.

The square root of 128190357 is about 11322.1180438997. The cubic root of 128190357 is about 504.2181241227.

The spelling of 128190357 in words is "one hundred twenty-eight million, one hundred ninety thousand, three hundred fifty-seven".