308998 has 8 divisors (see below), whose sum is σ = 474408. Its totient is φ = 150864.

The previous prime is 308989. The next prime is 308999. The reversal of 308998 is 899803.

308998 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

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 (308999) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1711 + ... + 1882.

It is an arithmetic number, because the mean of its divisors is an integer number (59301).

2³⁰⁸⁹⁹⁸ is an apocalyptic number.

308998 is a deficient number, since it is larger than the sum of its proper divisors (165410).

308998 is a wasteful number, since it uses less digits than its factorization.

308998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3638.

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 308998 is about 555.8758854277. The cubic root of 308998 is about 67.6059971571.

The spelling of 308998 in words is "three hundred eight thousand, nine hundred ninety-eight".