307245 has 8 divisors (see below), whose sum is σ = 491616. Its totient is φ = 163856.

The previous prime is 307243. The next prime is 307253. The reversal of 307245 is 542703.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 307245 - 2¹ = 307243 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (307243) 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, 10227 + ... + 10256.

It is an arithmetic number, because the mean of its divisors is an integer number (61452).

2³⁰⁷²⁴⁵ is an apocalyptic number.

It is an amenable number.

307245 is a deficient number, since it is larger than the sum of its proper divisors (184371).

307245 is a wasteful number, since it uses less digits than its factorization.

307245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20491.

The product of its (nonzero) digits is 840, while the sum is 21.

The square root of 307245 is about 554.2968518763. The cubic root of 307245 is about 67.4779077221.

Adding to 307245 its reverse (542703), we get a palindrome (849948).

The spelling of 307245 in words is "three hundred seven thousand, two hundred forty-five".