345009128 has 16 divisors (see below), whose sum is σ = 649745280. Its totient is φ = 171743728.

The previous prime is 345009121. The next prime is 345009151. The reversal of 345009128 is 821900543.

It is a junction number, because it is equal to n+sod(n) for n = 345009094 and 345009103.

It is not an unprimeable number, because it can be changed into a prime (345009121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93176 + ... + 96807.

It is an arithmetic number, because the mean of its divisors is an integer number (40609080).

Almost surely, 2^345009128 is an apocalyptic number.

It is an amenable number.

345009128 is a deficient number, since it is larger than the sum of its proper divisors (304736152).

345009128 is a wasteful number, since it uses less digits than its factorization.

345009128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190216 (or 190212 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 345009128 is about 18574.4213368815. The cubic root of 345009128 is about 701.3640937978.

The spelling of 345009128 in words is "three hundred forty-five million, nine thousand, one hundred twenty-eight".