305220044 has 24 divisors (see below), whose sum is σ = 540078000. Its totient is φ = 150920640.

The previous prime is 305220037. The next prime is 305220049. The reversal of 305220044 is 440022503.

It is a junction number, because it is equal to n+sod(n) for n = 305219998 and 305220025.

It is not an unprimeable number, because it can be changed into a prime (305220049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 182042 + ... + 183710.

It is an arithmetic number, because the mean of its divisors is an integer number (22503250).

Almost surely, 2^305220044 is an apocalyptic number.

It is an amenable number.

305220044 is a deficient number, since it is larger than the sum of its proper divisors (234857956).

305220044 is a wasteful number, since it uses less digits than its factorization.

305220044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2153 (or 2151 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 305220044 is about 17470.5479021123. The cubic root of 305220044 is about 673.2933890191.

Adding to 305220044 its reverse (440022503), we get a palindrome (745242547).

The spelling of 305220044 in words is "three hundred five million, two hundred twenty thousand, forty-four".