128107156 has 12 divisors (see below), whose sum is σ = 224631540. Its totient is φ = 63926720.

The previous prime is 128107153. The next prime is 128107157. The reversal of 128107156 is 651701821.

It can be written as a sum of positive squares in 2 ways, for example, as 90897156 + 37210000 = 9534^2 + 6100^2 .

It is a super-2 number, since 2×128107156² = 32822886836816672, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128107151) 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, 29425 + ... + 33496.

It is an arithmetic number, because the mean of its divisors is an integer number (18719295).

Almost surely, 2^128107156 is an apocalyptic number.

It is an amenable number.

128107156 is a deficient number, since it is larger than the sum of its proper divisors (96524384).

128107156 is a wasteful number, since it uses less digits than its factorization.

128107156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63434 (or 63432 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 31.

The square root of 128107156 is about 11318.4431791656. The cubic root of 128107156 is about 504.1090141697.

Adding to 128107156 its reverse (651701821), we get a palindrome (779808977).

The spelling of 128107156 in words is "one hundred twenty-eight million, one hundred seven thousand, one hundred fifty-six".