308984 has 16 divisors (see below), whose sum is σ = 624120. Its totient is φ = 142560.

The previous prime is 308951. The next prime is 308989. The reversal of 308984 is 489803.

308984 = T₁₉ + T₂₀ + ... + T₁₂₂.

It is a super-2 number, since 2×308984² = 190942224512, which contains 22 as substring.

It is a nialpdrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 308984.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 308984.

It is not an unprimeable number, because it can be changed into a prime (308989) by changing a digit.

308984 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 3 ways as a sum of consecutive naturals, for example, 1382 + ... + 1589.

2³⁰⁸⁹⁸⁴ is an apocalyptic number.

It is an amenable number.

308984 is an abundant number, since it is smaller than the sum of its proper divisors (315136).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

308984 is a wasteful number, since it uses less digits than its factorization.

308984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2990 (or 2986 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 308984 is about 555.8632925459. The cubic root of 308984 is about 67.6049761168.

The spelling of 308984 in words is "three hundred eight thousand, nine hundred eighty-four".