128169496 has 64 divisors (see below), whose sum is σ = 301896000. Its totient is φ = 50690304.

The previous prime is 128169493. The next prime is 128169527. The reversal of 128169496 is 694961821.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128169491) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33876 + ... + 37468.

It is an arithmetic number, because the mean of its divisors is an integer number (4717125).

Almost surely, 2^128169496 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 128169496, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (150948000).

128169496 is an abundant number, since it is smaller than the sum of its proper divisors (173726504).

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

128169496 is a wasteful number, since it uses less digits than its factorization.

128169496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3633 (or 3615 counting only the distinct ones).

The product of its digits is 186624, while the sum is 46.

The square root of 128169496 is about 11321.1967565271. The cubic root of 128169496 is about 504.1907714025.

The spelling of 128169496 in words is "one hundred twenty-eight million, one hundred sixty-nine thousand, four hundred ninety-six".