308745 has 16 divisors (see below), whose sum is σ = 549120. Its totient is φ = 164592.

The previous prime is 308723. The next prime is 308761. The reversal of 308745 is 547803.

It is not a de Polignac number, because 308745 - 2⁵ = 308713 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1009 + ... + 1278.

It is an arithmetic number, because the mean of its divisors is an integer number (34320).

2³⁰⁸⁷⁴⁵ is an apocalyptic number.

It is an amenable number.

308745 is a deficient number, since it is larger than the sum of its proper divisors (240375).

308745 is a wasteful number, since it uses less digits than its factorization.

308745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2301 (or 2295 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 308745 is about 555.6482700414. The cubic root of 308745 is about 67.5875407403.

The spelling of 308745 in words is "three hundred eight thousand, seven hundred forty-five".