305222838 has 32 divisors (see below), whose sum is σ = 633000960. Its totient is φ = 98011680.

The previous prime is 305222791. The next prime is 305222839. The reversal of 305222838 is 838222503.

It is a junction number, because it is equal to n+sod(n) for n = 305222799 and 305222808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (305222839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38608 + ... + 45836.

It is an arithmetic number, because the mean of its divisors is an integer number (19781280).

Almost surely, 2^305222838 is an apocalyptic number.

305222838 is an abundant number, since it is smaller than the sum of its proper divisors (327778122).

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

305222838 is a wasteful number, since it uses less digits than its factorization.

305222838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7492.

The product of its (nonzero) digits is 23040, while the sum is 33.

The square root of 305222838 is about 17470.6278650769. The cubic root of 305222838 is about 673.2954434669.

The spelling of 305222838 in words is "three hundred five million, two hundred twenty-two thousand, eight hundred thirty-eight".