47216785 has 32 divisors (see below), whose sum is σ = 73094400. Its totient is φ = 28412160.

The previous prime is 47216779. The next prime is 47216797. The reversal of 47216785 is 58761274.

It is not a de Polignac number, because 47216785 - 2³ = 47216777 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9051 + ... + 13279.

It is an arithmetic number, because the mean of its divisors is an integer number (2284200).

Almost surely, 2^47216785 is an apocalyptic number.

It is an amenable number.

47216785 is a deficient number, since it is larger than the sum of its proper divisors (25877615).

47216785 is a wasteful number, since it uses less digits than its factorization.

47216785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4281.

The product of its digits is 94080, while the sum is 40.

The square root of 47216785 is about 6871.4470819471. The cubic root of 47216785 is about 361.4366077314.

The spelling of 47216785 in words is "forty-seven million, two hundred sixteen thousand, seven hundred eighty-five".