47838646 has 8 divisors (see below), whose sum is σ = 75979080. Its totient is φ = 22512288.

The previous prime is 47838613. The next prime is 47838647. The reversal of 47838646 is 64683874.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×47838646² = 4577072102226632, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 47838596 and 47838605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47838647) 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 3 ways as a sum of consecutive naturals, for example, 703476 + ... + 703543.

It is an arithmetic number, because the mean of its divisors is an integer number (9497385).

Almost surely, 2^47838646 is an apocalyptic number.

47838646 is a deficient number, since it is larger than the sum of its proper divisors (28140434).

47838646 is a wasteful number, since it uses less digits than its factorization.

47838646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1407038.

The product of its digits is 774144, while the sum is 46.

The square root of 47838646 is about 6916.5487058214. The cubic root of 47838646 is about 363.0164396423.

It can be divided in two parts, 47838 and 646, that added together give a palindrome (48484).

The spelling of 47838646 in words is "forty-seven million, eight hundred thirty-eight thousand, six hundred forty-six".