308855 has 8 divisors (see below), whose sum is σ = 373632. Its totient is φ = 245088.

The previous prime is 308851. The next prime is 308857. The reversal of 308855 is 558803.

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 308855 - 2² = 308851 is a prime.

It is a super-2 number, since 2×308855² = 190782822050, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (308851) 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, 977 + ... + 1253.

It is an arithmetic number, because the mean of its divisors is an integer number (46704).

2³⁰⁸⁸⁵⁵ is an apocalyptic number.

308855 is a deficient number, since it is larger than the sum of its proper divisors (64777).

308855 is a wasteful number, since it uses less digits than its factorization.

308855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505.

The product of its (nonzero) digits is 4800, while the sum is 29.

The square root of 308855 is about 555.7472447075. The cubic root of 308855 is about 67.5955665078.

The spelling of 308855 in words is "three hundred eight thousand, eight hundred fifty-five".