128695952 has 60 divisors (see below), whose sum is σ = 316448496. Its totient is φ = 50137920.

The previous prime is 128695951. The next prime is 128695969. The reversal of 128695952 is 259596821.

It is a super-2 number, since 2×128695952² = 33125296122372608, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 128695897 and 128695906.

It is not an unprimeable number, because it can be changed into a prime (128695951) 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, 1163 + ... + 16085.

Almost surely, 2^128695952 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 128695952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (158224248).

128695952 is an abundant number, since it is smaller than the sum of its proper divisors (187752544).

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

128695952 is a wasteful number, since it uses less digits than its factorization.

128695952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14956 (or 14943 counting only the distinct ones).

The product of its digits is 388800, while the sum is 47.

The square root of 128695952 is about 11344.4238284719. The cubic root of 128695952 is about 504.8801493187.

The spelling of 128695952 in words is "one hundred twenty-eight million, six hundred ninety-five thousand, nine hundred fifty-two".