305645045 has 16 divisors (see below), whose sum is σ = 383571072. Its totient is φ = 233365440.

The previous prime is 305645033. The next prime is 305645051. The reversal of 305645045 is 540546503.

It is not a de Polignac number, because 305645045 - 2⁸ = 305644789 is a prime.

It is a super-4 number, since 4×305645045⁴ (a number of 35 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 53759 + ... + 59171.

It is an arithmetic number, because the mean of its divisors is an integer number (23973192).

Almost surely, 2^305645045 is an apocalyptic number.

It is an amenable number.

305645045 is a deficient number, since it is larger than the sum of its proper divisors (77926027).

305645045 is a wasteful number, since it uses less digits than its factorization.

305645045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5932.

The product of its (nonzero) digits is 36000, while the sum is 32.

The square root of 305645045 is about 17482.7070272312. The cubic root of 305645045 is about 673.6057512596.

The spelling of 305645045 in words is "three hundred five million, six hundred forty-five thousand, forty-five".