308047 has 8 divisors (see below), whose sum is σ = 335360. Its totient is φ = 281880.

The previous prime is 308041. The next prime is 308051. The reversal of 308047 is 740803.

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 308047 - 2⁷ = 307919 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (308041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 328 + ... + 850.

It is an arithmetic number, because the mean of its divisors is an integer number (41920).

2³⁰⁸⁰⁴⁷ is an apocalyptic number.

308047 is a deficient number, since it is larger than the sum of its proper divisors (27313).

308047 is a wasteful number, since it uses less digits than its factorization.

308047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 573.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 308047 is about 555.0198194659. The cubic root of 308047 is about 67.5365691192.

Subtracting from 308047 its sum of digits (22), we obtain a square (308025 = 555²).

The spelling of 308047 in words is "three hundred eight thousand, forty-seven".