306190028 has 6 divisors (see below), whose sum is σ = 535832556. Its totient is φ = 153095012.

The previous prime is 306190021. The next prime is 306190051. The reversal of 306190028 is 820091603.

It is not an unprimeable number, because it can be changed into a prime (306190021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38273750 + ... + 38273757.

It is an arithmetic number, because the mean of its divisors is an integer number (89305426).

Almost surely, 2^306190028 is an apocalyptic number.

It is an amenable number.

306190028 is a deficient number, since it is larger than the sum of its proper divisors (229642528).

306190028 is a wasteful number, since it uses less digits than its factorization.

306190028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76547511 (or 76547509 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 306190028 is about 17498.2864303908. The cubic root of 306190028 is about 674.0058730304.

The spelling of 306190028 in words is "three hundred six million, one hundred ninety thousand, twenty-eight".