47284181 has 16 divisors (see below), whose sum is σ = 56284800. Its totient is φ = 38864448.

The previous prime is 47284169. The next prime is 47284183. The reversal of 47284181 is 18148274.

It is not a de Polignac number, because 47284181 - 2¹⁰ = 47283157 is a prime.

It is a super-2 number, since 2×47284181² = 4471587545681522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47284183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32375 + ... + 33803.

It is an arithmetic number, because the mean of its divisors is an integer number (3517800).

Almost surely, 2^47284181 is an apocalyptic number.

It is an amenable number.

47284181 is a deficient number, since it is larger than the sum of its proper divisors (9000619).

47284181 is a wasteful number, since it uses less digits than its factorization.

47284181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1628.

The product of its digits is 14336, while the sum is 35.

The square root of 47284181 is about 6876.3493948461. The cubic root of 47284181 is about 361.6084943519.

The spelling of 47284181 in words is "forty-seven million, two hundred eighty-four thousand, one hundred eighty-one".