47827638 has 32 divisors (see below), whose sum is σ = 107328000. Its totient is φ = 15785928.

The previous prime is 47827601. The next prime is 47827657. The reversal of 47827638 is 83672874.

It is a happy number.

47827638 is a `hidden beast` number, since 4 + 7 + 8 + 2 + 7 + 638 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 47827593 and 47827602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1263 + ... + 9861.

It is an arithmetic number, because the mean of its divisors is an integer number (3354000).

Almost surely, 2^47827638 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 47827638, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53664000).

47827638 is an abundant number, since it is smaller than the sum of its proper divisors (59500362).

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

47827638 is a wasteful number, since it uses less digits than its factorization.

47827638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8713 (or 8707 counting only the distinct ones).

The product of its digits is 451584, while the sum is 45.

The square root of 47827638 is about 6915.7528874303. The cubic root of 47827638 is about 362.9885933169.

The spelling of 47827638 in words is "forty-seven million, eight hundred twenty-seven thousand, six hundred thirty-eight".