128287134 has 48 divisors (see below), whose sum is σ = 298389312. Its totient is φ = 39688704.

The previous prime is 128287127. The next prime is 128287157. The reversal of 128287134 is 431782821.

It is a super-3 number, since 3×128287134³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19467 + ... + 25209.

It is an arithmetic number, because the mean of its divisors is an integer number (6216444).

Almost surely, 2^128287134 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 128287134, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (149194656).

128287134 is an abundant number, since it is smaller than the sum of its proper divisors (170102178).

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

128287134 is a wasteful number, since it uses less digits than its factorization.

128287134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5841 (or 5838 counting only the distinct ones).

The product of its digits is 21504, while the sum is 36.

The square root of 128287134 is about 11326.3910403976. The cubic root of 128287134 is about 504.3449782898.

The spelling of 128287134 in words is "one hundred twenty-eight million, two hundred eighty-seven thousand, one hundred thirty-four".