128513534 has 8 divisors (see below), whose sum is σ = 193216800. Its totient is φ = 64107936.

The previous prime is 128513531. The next prime is 128513537. The reversal of 128513534 is 435315821.

It is an interprime number because it is at equal distance from previous prime (128513531) and next prime (128513537).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 128513534.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128513531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73334 + ... + 75065.

It is an arithmetic number, because the mean of its divisors is an integer number (24152100).

Almost surely, 2^128513534 is an apocalyptic number.

128513534 is a deficient number, since it is larger than the sum of its proper divisors (64703266).

128513534 is a wasteful number, since it uses less digits than its factorization.

128513534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148834.

The product of its digits is 14400, while the sum is 32.

The square root of 128513534 is about 11336.3809921862. The cubic root of 128513534 is about 504.6414917831.

The spelling of 128513534 in words is "one hundred twenty-eight million, five hundred thirteen thousand, five hundred thirty-four".