47781860 has 36 divisors (see below), whose sum is σ = 116726652. Its totient is φ = 16382016.

The previous prime is 47781859. The next prime is 47781863. The reversal of 47781860 is 6818774.

47781860 is nontrivially palindromic in base 13.

It can be written as a sum of positive squares in 2 ways, for example, as 12545764 + 35236096 = 3542^2 + 5936^2 .

It is a super-2 number, since 2×47781860² = 4566212290119200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (47781863) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23399 + ... + 25358.

It is an arithmetic number, because the mean of its divisors is an integer number (3242407).

Almost surely, 2^47781860 is an apocalyptic number.

It is an amenable number.

47781860 is an abundant number, since it is smaller than the sum of its proper divisors (68944792).

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

47781860 is a wasteful number, since it uses less digits than its factorization.

47781860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48780 (or 48771 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 41.

The square root of 47781860 is about 6912.4424048233. The cubic root of 47781860 is about 362.8727454032.

The spelling of 47781860 in words is "forty-seven million, seven hundred eighty-one thousand, eight hundred sixty".