340228405 has 12 divisors (see below), whose sum is σ = 448764876. Its totient is φ = 247438400.

The previous prime is 340228391. The next prime is 340228409. The reversal of 340228405 is 504822043.

It can be written as a sum of positive squares in 2 ways, for example, as 154778481 + 185449924 = 12441^2 + 13618^2 .

It is not a de Polignac number, because 340228405 - 2¹¹ = 340226357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340228409) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 280576 + ... + 281785.

It is an arithmetic number, because the mean of its divisors is an integer number (37397073).

Almost surely, 2^340228405 is an apocalyptic number.

It is an amenable number.

340228405 is a deficient number, since it is larger than the sum of its proper divisors (108536471).

340228405 is a wasteful number, since it uses less digits than its factorization.

340228405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 562388 (or 562377 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 28.

The square root of 340228405 is about 18445.2813749208. The cubic root of 340228405 is about 698.1094599042.

The spelling of 340228405 in words is "three hundred forty million, two hundred twenty-eight thousand, four hundred five".