920340305 has 16 divisors (see below), whose sum is σ = 1170346320. Its totient is φ = 692385792.

The previous prime is 920340299. The next prime is 920340349. The reversal of 920340305 is 503043029.

920340305 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 240591121 + 679749184 = 15511^2 + 26072^2 .

It is not a de Polignac number, because 920340305 - 2⁶ = 920340241 is a prime.

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, 117677 + ... + 125253.

It is an arithmetic number, because the mean of its divisors is an integer number (73146645).

Almost surely, 2^920340305 is an apocalyptic number.

It is an amenable number.

920340305 is a deficient number, since it is larger than the sum of its proper divisors (250006015).

920340305 is a wasteful number, since it uses less digits than its factorization.

920340305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9028.

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

The square root of 920340305 is about 30337.1110193439. Note that the first 3 decimals coincide. The cubic root of 920340305 is about 972.7087305811.

The spelling of 920340305 in words is "nine hundred twenty million, three hundred forty thousand, three hundred five".