308408 has 16 divisors (see below), whose sum is σ = 609000. Its totient is φ = 146016.

The previous prime is 308383. The next prime is 308411. The reversal of 308408 is 804803.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 863 + ... + 1166.

2³⁰⁸⁴⁰⁸ is an apocalyptic number.

308408 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

It is an amenable number.

308408 is a deficient number, since it is larger than the sum of its proper divisors (300592).

308408 is a wasteful number, since it uses less digits than its factorization.

308408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2054 (or 2050 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 308408 is about 555.3449378539. The cubic root of 308408 is about 67.5629408349.

The spelling of 308408 in words is "three hundred eight thousand, four hundred eight".