345272 has 8 divisors (see below), whose sum is σ = 647400. Its totient is φ = 172632.

The previous prime is 345271. The next prime is 345307. The reversal of 345272 is 272543.

It is a tau number, because it is divible by the number of its divisors (8).

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21572 + ... + 21587.

It is an arithmetic number, because the mean of its divisors is an integer number (80925).

2³⁴⁵²⁷² is an apocalyptic number.

It is an amenable number.

345272 is a deficient number, since it is larger than the sum of its proper divisors (302128).

345272 is a wasteful number, since it uses less digits than its factorization.

345272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43165 (or 43161 counting only the distinct ones).

The product of its digits is 1680, while the sum is 23.

The square root of 345272 is about 587.5985023807. The cubic root of 345272 is about 70.1542178146.

The spelling of 345272 in words is "three hundred forty-five thousand, two hundred seventy-two".