305226020 has 48 divisors (see below), whose sum is σ = 706503168. Its totient is φ = 109839360.

The previous prime is 305225983. The next prime is 305226049. The reversal of 305226020 is 20622503.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 305225983 and 305226001.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14189 + ... + 28491.

It is an arithmetic number, because the mean of its divisors is an integer number (14718816).

Almost surely, 2^305226020 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 305226020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (353251584).

305226020 is an abundant number, since it is smaller than the sum of its proper divisors (401277148).

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

305226020 is a wasteful number, since it uses less digits than its factorization.

305226020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14420 (or 14418 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 305226020 is about 17470.7189319730. The cubic root of 305226020 is about 673.2977831986.

Adding to 305226020 its reverse (20622503), we get a palindrome (325848523).

The spelling of 305226020 in words is "three hundred five million, two hundred twenty-six thousand, twenty".