128934615 has 16 divisors (see below), whose sum is σ = 207368928. Its totient is φ = 68407296.

The previous prime is 128934601. The next prime is 128934629. The reversal of 128934615 is 516439821.

It is an interprime number because it is at equal distance from previous prime (128934601) and next prime (128934629).

It is not a de Polignac number, because 128934615 - 2¹¹ = 128932567 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19374 + ... + 25163.

It is an arithmetic number, because the mean of its divisors is an integer number (12960558).

Almost surely, 2^128934615 is an apocalyptic number.

128934615 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

128934615 is a deficient number, since it is larger than the sum of its proper divisors (78434313).

128934615 is a wasteful number, since it uses less digits than its factorization.

128934615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44738.

The product of its digits is 51840, while the sum is 39.

The square root of 128934615 is about 11354.9379126440. The cubic root of 128934615 is about 505.1920519083.

The spelling of 128934615 in words is "one hundred twenty-eight million, nine hundred thirty-four thousand, six hundred fifteen".