308493 has 12 divisors (see below), whose sum is σ = 450528. Its totient is φ = 203400.

The previous prime is 308491. The next prime is 308501. The reversal of 308493 is 394803.

It is not a de Polignac number, because 308493 - 2¹ = 308491 is a prime.

308493 is a lucky 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 (308491) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1246 + ... + 1472.

It is an arithmetic number, because the mean of its divisors is an integer number (37544).

2³⁰⁸⁴⁹³ is an apocalyptic number.

It is an amenable number.

308493 is a deficient number, since it is larger than the sum of its proper divisors (142035).

308493 is a wasteful number, since it uses less digits than its factorization.

308493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 384 (or 381 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 308493 is about 555.4214615947. The cubic root of 308493 is about 67.5691472481.

The spelling of 308493 in words is "three hundred eight thousand, four hundred ninety-three".