128111364 has 18 divisors (see below), whose sum is σ = 323837150. Its totient is φ = 42703776.

The previous prime is 128111363. The next prime is 128111369. The reversal of 128111364 is 463111821.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 87048900 + 41062464 = 9330^2 + 6408^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128111363) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1779289 + ... + 1779360.

Almost surely, 2^128111364 is an apocalyptic number.

It is an amenable number.

128111364 is an abundant number, since it is smaller than the sum of its proper divisors (195725786).

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

128111364 is a wasteful number, since it uses less digits than its factorization.

128111364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3558659 (or 3558654 counting only the distinct ones).

The product of its digits is 1152, while the sum is 27.

The square root of 128111364 is about 11318.6290689288. The cubic root of 128111364 is about 504.1145336831.

The spelling of 128111364 in words is "one hundred twenty-eight million, one hundred eleven thousand, three hundred sixty-four".