305380190 has 16 divisors (see below), whose sum is σ = 550052640. Its totient is φ = 122070240.

The previous prime is 305380183. The next prime is 305380193. The reversal of 305380190 is 91083503.

It is a super-2 number, since 2×305380190² = 186514120888872200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (305380193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6791 + ... + 25629.

It is an arithmetic number, because the mean of its divisors is an integer number (34378290).

Almost surely, 2^305380190 is an apocalyptic number.

305380190 is a deficient number, since it is larger than the sum of its proper divisors (244672450).

305380190 is a wasteful number, since it uses less digits than its factorization.

305380190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20467.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 305380190 is about 17475.1306146764. The cubic root of 305380190 is about 673.4111252691.

The spelling of 305380190 in words is "three hundred five million, three hundred eighty thousand, one hundred ninety".