427880305 has 8 divisors (see below), whose sum is σ = 525979944. Its totient is φ = 333955200.

The previous prime is 427880303. The next prime is 427880309. The reversal of 427880305 is 503088724.

It can be written as a sum of positive squares in 4 ways, for example, as 13024881 + 414855424 = 3609^2 + 20368^2 .

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

It is not a de Polignac number, because 427880305 - 2¹ = 427880303 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (427880303) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1043406 + ... + 1043815.

It is an arithmetic number, because the mean of its divisors is an integer number (65747493).

Almost surely, 2^427880305 is an apocalyptic number.

It is an amenable number.

427880305 is a deficient number, since it is larger than the sum of its proper divisors (98099639).

427880305 is a wasteful number, since it uses less digits than its factorization.

427880305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2087267.

The product of its (nonzero) digits is 53760, while the sum is 37.

The square root of 427880305 is about 20685.2678251939. The cubic root of 427880305 is about 753.5419457544.

The spelling of 427880305 in words is "four hundred twenty-seven million, eight hundred eighty thousand, three hundred five".