305133146 has 8 divisors (see below), whose sum is σ = 457795584. Its totient is φ = 152534620.

The previous prime is 305133139. The next prime is 305133151. The reversal of 305133146 is 641331503.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1370 + ... + 24741.

It is an arithmetic number, because the mean of its divisors is an integer number (57224448).

Almost surely, 2^305133146 is an apocalyptic number.

305133146 is a deficient number, since it is larger than the sum of its proper divisors (152662438).

305133146 is a wasteful number, since it uses less digits than its factorization.

305133146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31956.

The product of its (nonzero) digits is 3240, while the sum is 26.

The square root of 305133146 is about 17468.0607395326. The cubic root of 305133146 is about 673.2294860487.

Adding to 305133146 its reverse (641331503), we get a palindrome (946464649).

The spelling of 305133146 in words is "three hundred five million, one hundred thirty-three thousand, one hundred forty-six".