128964735 has 24 divisors (see below), whose sum is σ = 226374720. Its totient is φ = 67908672.

The previous prime is 128964733. The next prime is 128964751. The reversal of 128964735 is 537469821.

It is not a de Polignac number, because 128964735 - 2¹ = 128964733 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128964733) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14584 + ... + 21693.

It is an arithmetic number, because the mean of its divisors is an integer number (9432280).

Almost surely, 2^128964735 is an apocalyptic number.

128964735 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

128964735 is a deficient number, since it is larger than the sum of its proper divisors (97409985).

128964735 is a wasteful number, since it uses less digits than its factorization.

128964735 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36367 (or 36364 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 128964735 is about 11356.2641304260. The cubic root of 128964735 is about 505.2313876080.

The spelling of 128964735 in words is "one hundred twenty-eight million, nine hundred sixty-four thousand, seven hundred thirty-five".