302120226 has 128 divisors (see below), whose sum is σ = 762048000. Its totient is φ = 88197120.

The previous prime is 302120213. The next prime is 302120233. The reversal of 302120226 is 622021203.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 302120199 and 302120208.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 865500 + ... + 865848.

It is an arithmetic number, because the mean of its divisors is an integer number (5953500).

Almost surely, 2^302120226 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 302120226, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (381024000).

302120226 is an abundant number, since it is smaller than the sum of its proper divisors (459927774).

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

302120226 is a wasteful number, since it uses less digits than its factorization.

302120226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441 (or 435 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 302120226 is about 17381.6059672287. The cubic root of 302120226 is about 671.0063039720.

Adding to 302120226 its reverse (622021203), we get a palindrome (924141429).

The spelling of 302120226 in words is "three hundred two million, one hundred twenty thousand, two hundred twenty-six".