47638556 has 48 divisors (see below), whose sum is σ = 103384512. Its totient is φ = 18739200.

The previous prime is 47638531. The next prime is 47638571. The reversal of 47638556 is 65583674.

47638556 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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, 18296 + ... + 20736.

It is an arithmetic number, because the mean of its divisors is an integer number (2153844).

Almost surely, 2^47638556 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 47638556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51692256).

47638556 is an abundant number, since it is smaller than the sum of its proper divisors (55745956).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

47638556 is a wasteful number, since it uses less digits than its factorization.

47638556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2510 (or 2508 counting only the distinct ones).

The product of its digits is 604800, while the sum is 44.

The square root of 47638556 is about 6902.0689651727. The cubic root of 47638556 is about 362.5096146479.

It can be divided in two parts, 476 and 38556, that multiplied together give a square (18352656 = 4284²).

The spelling of 47638556 in words is "forty-seven million, six hundred thirty-eight thousand, five hundred fifty-six".