427790205 has 24 divisors (see below), whose sum is σ = 743028000. Its totient is φ = 227685600.

The previous prime is 427790203. The next prime is 427790219. The reversal of 427790205 is 502097724.

It is not a de Polignac number, because 427790205 - 2¹ = 427790203 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 427790205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (427790203) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12930 + ... + 31980.

It is an arithmetic number, because the mean of its divisors is an integer number (30959500).

Almost surely, 2^427790205 is an apocalyptic number.

427790205 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

427790205 is a deficient number, since it is larger than the sum of its proper divisors (315237795).

427790205 is a wasteful number, since it uses less digits than its factorization.

427790205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19561 (or 19558 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The square root of 427790205 is about 20683.0898320343. The cubic root of 427790205 is about 753.4890502019.

The spelling of 427790205 in words is "four hundred twenty-seven million, seven hundred ninety thousand, two hundred five".