47981584 has 50 divisors (see below), whose sum is σ = 108538750. Its totient is φ = 20547072.

The previous prime is 47981579. The next prime is 47981597. The reversal of 47981584 is 48518974.

It can be written as a sum of positive squares in only one way, i.e., 39337984 + 8643600 = 6272^2 + 2940^2 .

It is a nialpdrome in base 14.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 37792 + ... + 39040.

It is an arithmetic number, because the mean of its divisors is an integer number (2170775).

Almost surely, 2^47981584 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 47981584, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54269375).

47981584 is an abundant number, since it is smaller than the sum of its proper divisors (60557166).

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

47981584 is an equidigital number, since it uses as much as digits as its factorization.

47981584 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1285 (or 1258 counting only the distinct ones).

The product of its digits is 322560, while the sum is 46.

The square root of 47981584 is about 6926.8740424523. The cubic root of 47981584 is about 363.3776347144.

The spelling of 47981584 in words is "forty-seven million, nine hundred eighty-one thousand, five hundred eighty-four".