47684540 has 24 divisors (see below), whose sum is σ = 100316832. Its totient is φ = 19039680.

The previous prime is 47684537. The next prime is 47684561. The reversal of 47684540 is 4548674.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 47684494 and 47684503.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11417 + ... + 15023.

It is an arithmetic number, because the mean of its divisors is an integer number (4179868).

Almost surely, 2^47684540 is an apocalyptic number.

It is an amenable number.

47684540 is an abundant number, since it is smaller than the sum of its proper divisors (52632292).

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

47684540 is a wasteful number, since it uses less digits than its factorization.

47684540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4277 (or 4275 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 38.

The square root of 47684540 is about 6905.3993367509. The cubic root of 47684540 is about 362.6262168488.

The spelling of 47684540 in words is "forty-seven million, six hundred eighty-four thousand, five hundred forty".