305216049 has 32 divisors (see below), whose sum is σ = 440745984. Its totient is φ = 187323840.

The previous prime is 305216017. The next prime is 305216053. The reversal of 305216049 is 940612503.

It is not a de Polignac number, because 305216049 - 2⁵ = 305216017 is a prime.

It is not an unprimeable number, because it can be changed into a prime (305216099) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 626484 + ... + 626970.

It is an arithmetic number, because the mean of its divisors is an integer number (13773312).

Almost surely, 2^305216049 is an apocalyptic number.

It is an amenable number.

305216049 is a deficient number, since it is larger than the sum of its proper divisors (135529935).

305216049 is a wasteful number, since it uses less digits than its factorization.

305216049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 837.

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 305216049 is about 17470.4335664574. The cubic root of 305216049 is about 673.2904514457.

The spelling of 305216049 in words is "three hundred five million, two hundred sixteen thousand, forty-nine".