305005000 has 40 divisors (see below), whose sum is σ = 714638430. Its totient is φ = 122000000.

The previous prime is 305004991. The next prime is 305005003. The reversal of 305005000 is 500503.

It can be written as a sum of positive squares in 5 ways, for example, as 10745284 + 294259716 = 3278^2 + 17154^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (305005003) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 25501 + ... + 35500.

Almost surely, 2^305005000 is an apocalyptic number.

It is an amenable number.

305005000 is an abundant number, since it is smaller than the sum of its proper divisors (409633430).

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

305005000 is an equidigital number, since it uses as much as digits as its factorization.

305005000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61027 (or 61008 counting only the distinct ones).

The product of its (nonzero) digits is 75, while the sum is 13.

The square root of 305005000 is about 17464.3923455699. The cubic root of 305005000 is about 673.1352280209.

Adding to 305005000 its reverse (500503), we get a palindrome (305505503).

The spelling of 305005000 in words is "three hundred five million, five thousand".