128958345 has 64 divisors (see below), whose sum is σ = 246032640. Its totient is φ = 63857664.

The previous prime is 128958343. The next prime is 128958353. The reversal of 128958345 is 543859821.

128958345 is a `hidden beast` number, since 1 + 28 + 9 + 583 + 45 = 666.

It is not a de Polignac number, because 128958345 - 2¹ = 128958343 is a prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 128958345.

It is not an unprimeable number, because it can be changed into a prime (128958343) 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 63 ways as a sum of consecutive naturals, for example, 190147 + ... + 190823.

It is an arithmetic number, because the mean of its divisors is an integer number (3844260).

Almost surely, 2^128958345 is an apocalyptic number.

128958345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

128958345 is a deficient number, since it is larger than the sum of its proper divisors (117074295).

128958345 is a wasteful number, since it uses less digits than its factorization.

128958345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 791 (or 785 counting only the distinct ones).

The product of its digits is 345600, while the sum is 45.

The square root of 128958345 is about 11355.9827844181. The cubic root of 128958345 is about 505.2230429963.

The spelling of 128958345 in words is "one hundred twenty-eight million, nine hundred fifty-eight thousand, three hundred forty-five".