345705140 has 24 divisors (see below), whose sum is σ = 791979552. Its totient is φ = 125710880.

The previous prime is 345705137. The next prime is 345705161. The reversal of 345705140 is 41507543.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 785474 + ... + 785913.

It is an arithmetic number, because the mean of its divisors is an integer number (32999148).

Almost surely, 2^345705140 is an apocalyptic number.

It is an amenable number.

345705140 is an abundant number, since it is smaller than the sum of its proper divisors (446274412).

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

345705140 is a wasteful number, since it uses less digits than its factorization.

345705140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1571407 (or 1571405 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 29.

The square root of 345705140 is about 18593.1476625127. The cubic root of 345705140 is about 701.8354145910.

The spelling of 345705140 in words is "three hundred forty-five million, seven hundred five thousand, one hundred forty".