47280691 has 4 divisors (see below), whose sum is σ = 47300800. Its totient is φ = 47260584.

The previous prime is 47280679. The next prime is 47280697. The reversal of 47280691 is 19608274.

47280691 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 47280691 - 2¹⁵ = 47247923 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 47280691.

It is not an unprimeable number, because it can be changed into a prime (47280697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5976 + ... + 11413.

It is an arithmetic number, because the mean of its divisors is an integer number (11825200).

Almost surely, 2^47280691 is an apocalyptic number.

47280691 is a deficient number, since it is larger than the sum of its proper divisors (20109).

47280691 is a wasteful number, since it uses less digits than its factorization.

47280691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20108.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 47280691 is about 6876.0956217900. The cubic root of 47280691 is about 361.5995974744.

The spelling of 47280691 in words is "forty-seven million, two hundred eighty thousand, six hundred ninety-one".