305492 has 24 divisors (see below), whose sum is σ = 598752. Its totient is φ = 135200.

The previous prime is 305489. The next prime is 305497. The reversal of 305492 is 294503.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (305497) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2267 + ... + 2397.

It is an arithmetic number, because the mean of its divisors is an integer number (24948).

2³⁰⁵⁴⁹² is an apocalyptic number.

It is an amenable number.

305492 is a deficient number, since it is larger than the sum of its proper divisors (293260).

305492 is a wasteful number, since it uses less digits than its factorization.

305492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199 (or 197 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 305492 is about 552.7133072398. The cubic root of 305492 is about 67.3493301425.

Adding to 305492 its reverse (294503), we get a palindrome (599995).

It can be divided in two parts, 305 and 492, that added together give a palindrome (797).

The spelling of 305492 in words is "three hundred five thousand, four hundred ninety-two".