305004020 has 24 divisors (see below), whose sum is σ = 662596200. Its totient is φ = 117794432.

The previous prime is 305003999. The next prime is 305004047. The reversal of 305004020 is 20400503.

It can be written as a sum of positive squares in 4 ways, for example, as 44568976 + 260435044 = 6676^2 + 16138^2 .

It is a junction number, because it is equal to n+sod(n) for n = 305003986 and 305004004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 262355 + ... + 263514.

It is an arithmetic number, because the mean of its divisors is an integer number (27608175).

Almost surely, 2^305004020 is an apocalyptic number.

It is an amenable number.

305004020 is an abundant number, since it is smaller than the sum of its proper divisors (357592180).

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

305004020 is a wasteful number, since it uses less digits than its factorization.

305004020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 525907 (or 525905 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 14.

The square root of 305004020 is about 17464.3642884589. The cubic root of 305004020 is about 673.1345070784.

Adding to 305004020 its reverse (20400503), we get a palindrome (325404523).

The spelling of 305004020 in words is "three hundred five million, four thousand, twenty".