47240305 has 16 divisors (see below), whose sum is σ = 66539520. Its totient is φ = 31516992.

The previous prime is 47240299. The next prime is 47240309. The reversal of 47240305 is 50304274.

It is a cyclic number.

It is not a de Polignac number, because 47240305 - 2⁷ = 47240177 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 47240305.

It is not an unprimeable number, because it can be changed into a prime (47240309) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16945 + ... + 19534.

It is an arithmetic number, because the mean of its divisors is an integer number (4158720).

Almost surely, 2^47240305 is an apocalyptic number.

It is an amenable number.

47240305 is a deficient number, since it is larger than the sum of its proper divisors (19299215).

47240305 is a wasteful number, since it uses less digits than its factorization.

47240305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36528.

The product of its (nonzero) digits is 3360, while the sum is 25.

The square root of 47240305 is about 6873.1582987736. The cubic root of 47240305 is about 361.4966116606.

Adding to 47240305 its reverse (50304274), we get a palindrome (97544579).

The spelling of 47240305 in words is "forty-seven million, two hundred forty thousand, three hundred five".