128168340 has 24 divisors (see below), whose sum is σ = 358871520. Its totient is φ = 34178208.

The previous prime is 128168297. The next prime is 128168377. The reversal of 128168340 is 43861821.

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, 1068010 + ... + 1068129.

It is an arithmetic number, because the mean of its divisors is an integer number (14952980).

Almost surely, 2^128168340 is an apocalyptic number.

128168340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128168340 is an abundant number, since it is smaller than the sum of its proper divisors (230703180).

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

128168340 is a wasteful number, since it uses less digits than its factorization.

128168340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2136151 (or 2136149 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 128168340 is about 11321.1457017388. The cubic root of 128168340 is about 504.1892555809.

The spelling of 128168340 in words is "one hundred twenty-eight million, one hundred sixty-eight thousand, three hundred forty".