47788643 has 16 divisors (see below), whose sum is σ = 55883520. Its totient is φ = 40020000.

The previous prime is 47788633. The next prime is 47788679. The reversal of 47788643 is 34688774.

47788643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 47788643 - 2⁴ = 47788627 is a prime.

It is not an unprimeable number, because it can be changed into a prime (47788633) 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 15 ways as a sum of consecutive naturals, for example, 103433 + ... + 103893.

It is an arithmetic number, because the mean of its divisors is an integer number (3492720).

Almost surely, 2^47788643 is an apocalyptic number.

47788643 is a deficient number, since it is larger than the sum of its proper divisors (8094877).

47788643 is a wasteful number, since it uses less digits than its factorization.

47788643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 778.

The product of its digits is 903168, while the sum is 47.

The square root of 47788643 is about 6912.9330244116. The cubic root of 47788643 is about 362.8899154434.

The spelling of 47788643 in words is "forty-seven million, seven hundred eighty-eight thousand, six hundred forty-three".