305396 has 24 divisors (see below), whose sum is σ = 658560. Its totient is φ = 120672.

The previous prime is 305377. The next prime is 305401. The reversal of 305396 is 693503.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is an unprimeable number.

305396 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56 + ... + 783.

It is an arithmetic number, because the mean of its divisors is an integer number (27440).

2³⁰⁵³⁹⁶ is an apocalyptic number.

It is an amenable number.

305396 is an abundant number, since it is smaller than the sum of its proper divisors (353164).

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

305396 is a wasteful number, since it uses less digits than its factorization.

305396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 863 (or 861 counting only the distinct ones).

The product of its (nonzero) digits is 2430, while the sum is 26.

The square root of 305396 is about 552.6264561166. The cubic root of 305396 is about 67.3422746244.

Adding to 305396 its reverse (693503), we get a palindrome (998899).

The spelling of 305396 in words is "three hundred five thousand, three hundred ninety-six".