345271730 has 16 divisors (see below), whose sum is σ = 621915840. Its totient is φ = 138013872.

The previous prime is 345271711. The next prime is 345271739. The reversal of 345271730 is 37172543.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (345271739) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4517 + ... + 26663.

It is an arithmetic number, because the mean of its divisors is an integer number (38869740).

Almost surely, 2^345271730 is an apocalyptic number.

345271730 is a deficient number, since it is larger than the sum of its proper divisors (276644110).

345271730 is a wasteful number, since it uses less digits than its factorization.

345271730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23713.

The product of its (nonzero) digits is 17640, while the sum is 32.

The square root of 345271730 is about 18581.4889069741. The cubic root of 345271730 is about 701.5419952787.

The spelling of 345271730 in words is "three hundred forty-five million, two hundred seventy-one thousand, seven hundred thirty".