128147934 has 16 divisors (see below), whose sum is σ = 256447872. Its totient is φ = 42690648.

The previous prime is 128147917. The next prime is 128147963. The reversal of 128147934 is 439741821.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 128147892 and 128147901.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6687 + ... + 17349.

It is an arithmetic number, because the mean of its divisors is an integer number (16027992).

Almost surely, 2^128147934 is an apocalyptic number.

128147934 is an abundant number, since it is smaller than the sum of its proper divisors (128299938).

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

128147934 is a wasteful number, since it uses less digits than its factorization.

128147934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12671.

The product of its digits is 48384, while the sum is 39.

The square root of 128147934 is about 11320.2444319900. The cubic root of 128147934 is about 504.1624964191.

The spelling of 128147934 in words is "one hundred twenty-eight million, one hundred forty-seven thousand, nine hundred thirty-four".