128253357 has 12 divisors (see below), whose sum is σ = 185477500. Its totient is φ = 85399488.

The previous prime is 128253329. The next prime is 128253379. The reversal of 128253357 is 753352821.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 93431556 + 34821801 = 9666^2 + 5901^2 .

It is a de Polignac number, because none of the positive numbers 2^k-128253357 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 (128253557) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 232 + ... + 16017.

Almost surely, 2^128253357 is an apocalyptic number.

It is an amenable number.

128253357 is a deficient number, since it is larger than the sum of its proper divisors (57224143).

128253357 is a wasteful number, since it uses less digits than its factorization.

128253357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17132 (or 17129 counting only the distinct ones).

The product of its digits is 50400, while the sum is 36.

The square root of 128253357 is about 11324.8998671070. The cubic root of 128253357 is about 504.3007110405.

The spelling of 128253357 in words is "one hundred twenty-eight million, two hundred fifty-three thousand, three hundred fifty-seven".