305322040 has 32 divisors (see below), whose sum is σ = 727386480. Its totient is φ = 114944512.

The previous prime is 305321999. The next prime is 305322041. The reversal of 305322040 is 40223503.

It is a junction number, because it is equal to n+sod(n) for n = 305321999 and 305322017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (305322041) 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, 223822 + ... + 225181.

Almost surely, 2^305322040 is an apocalyptic number.

It is an amenable number.

305322040 is an abundant number, since it is smaller than the sum of its proper divisors (422064440).

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

305322040 is a wasteful number, since it uses less digits than its factorization.

305322040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449031 (or 449027 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 19.

The square root of 305322040 is about 17473.4667424641. The cubic root of 305322040 is about 673.3683792714.

Adding to 305322040 its reverse (40223503), we get a palindrome (345545543).

The spelling of 305322040 in words is "three hundred five million, three hundred twenty-two thousand, forty".