305236072 has 8 divisors (see below), whose sum is σ = 572317650. Its totient is φ = 152618032.

The previous prime is 305236031. The next prime is 305236097. The reversal of 305236072 is 270632503.

It can be written as a sum of positive squares in only one way, i.e., 226984356 + 78251716 = 15066^2 + 8846^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 305236072.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19077247 + ... + 19077262.

Almost surely, 2^305236072 is an apocalyptic number.

It is an amenable number.

305236072 is a deficient number, since it is larger than the sum of its proper divisors (267081578).

305236072 is a wasteful number, since it uses less digits than its factorization.

305236072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38154515 (or 38154511 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 28.

The square root of 305236072 is about 17471.0066109540. The cubic root of 305236072 is about 673.3051743499.

Adding to 305236072 its reverse (270632503), we get a palindrome (575868575).

The spelling of 305236072 in words is "three hundred five million, two hundred thirty-six thousand, seventy-two".