305663274 has 96 divisors (see below), whose sum is σ = 794808000. Its totient is φ = 86819040.

The previous prime is 305663263. The next prime is 305663329. The reversal of 305663274 is 472366503.

It is a Curzon number.

It is a congruent number.

It is an unprimeable 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 47 ways as a sum of consecutive naturals, for example, 875652 + ... + 876000.

It is an arithmetic number, because the mean of its divisors is an integer number (8279250).

Almost surely, 2^305663274 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 305663274, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (397404000).

305663274 is an abundant number, since it is smaller than the sum of its proper divisors (489144726).

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

305663274 is a wasteful number, since it uses less digits than its factorization.

305663274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 705 (or 692 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 36.

The square root of 305663274 is about 17483.2283632057. The cubic root of 305663274 is about 673.6191425178.

The spelling of 305663274 in words is "three hundred five million, six hundred sixty-three thousand, two hundred seventy-four".