305173473 has 12 divisors (see below), whose sum is σ = 444034704. Its totient is φ = 184892800.

The previous prime is 305173439. The next prime is 305173483. The reversal of 305173473 is 374371503.

It is a happy number.

It is not a de Polignac number, because 305173473 - 2²⁰ = 304124897 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (305173403) 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, 98833 + ... + 101873.

It is an arithmetic number, because the mean of its divisors is an integer number (37002892).

Almost surely, 2^305173473 is an apocalyptic number.

305173473 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

It is an amenable number.

305173473 is a deficient number, since it is larger than the sum of its proper divisors (138861231).

305173473 is an frugal number, since it uses more digits than its factorization.

305173473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6096 (or 3055 counting only the distinct ones).

The product of its (nonzero) digits is 26460, while the sum is 33.

The square root of 305173473 is about 17469.2150081221. The cubic root of 305173473 is about 673.2591431889.

Multiplying 305173473 by its sum of digits (33), we get a square (10070724609 = 100353²).

305173473 divided by its sum of digits (33) gives a square (9247681 = 3041²).

The spelling of 305173473 in words is "three hundred five million, one hundred seventy-three thousand, four hundred seventy-three".