47858538 has 128 divisors (see below), whose sum is σ = 127475712. Its totient is φ = 11632896.

The previous prime is 47858533. The next prime is 47858543. The reversal of 47858538 is 83585874.

47858538 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (47858533) and next prime (47858543).

It is not an unprimeable number, because it can be changed into a prime (47858533) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 464595 + ... + 464697.

It is an arithmetic number, because the mean of its divisors is an integer number (995904).

Almost surely, 2^47858538 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 47858538, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63737856).

47858538 is an abundant number, since it is smaller than the sum of its proper divisors (79617174).

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

47858538 is a wasteful number, since it uses less digits than its factorization.

47858538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188.

The product of its digits is 1075200, while the sum is 48.

The square root of 47858538 is about 6917.9865567953. The cubic root of 47858538 is about 363.0667484963.

The spelling of 47858538 in words is "forty-seven million, eight hundred fifty-eight thousand, five hundred thirty-eight".