47587540 has 96 divisors (see below), whose sum is σ = 134233344. Its totient is φ = 13685760.

The previous prime is 47587523. The next prime is 47587543. The reversal of 47587540 is 4578574.

It is a junction number, because it is equal to n+sod(n) for n = 47587493 and 47587502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47587543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18832 + ... + 21208.

It is an arithmetic number, because the mean of its divisors is an integer number (1398264).

Almost surely, 2^47587540 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 47587540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67116672).

47587540 is an abundant number, since it is smaller than the sum of its proper divisors (86645804).

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

47587540 is a wasteful number, since it uses less digits than its factorization.

47587540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2417 (or 2415 counting only the distinct ones).

The product of its (nonzero) digits is 156800, while the sum is 40.

The square root of 47587540 is about 6898.3722717754. The cubic root of 47587540 is about 362.3801649078.

The spelling of 47587540 in words is "forty-seven million, five hundred eighty-seven thousand, five hundred forty".