47085820 has 24 divisors (see below), whose sum is σ = 99792000. Its totient is φ = 18660672.

The previous prime is 47085811. The next prime is 47085827. The reversal of 47085820 is 2858074.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47085827) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8620 + ... + 12979.

It is an arithmetic number, because the mean of its divisors is an integer number (4158000).

Almost surely, 2^47085820 is an apocalyptic number.

It is an amenable number.

47085820 is an abundant number, since it is smaller than the sum of its proper divisors (52706180).

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

47085820 is a wasteful number, since it uses less digits than its factorization.

47085820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21717 (or 21715 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 34.

The square root of 47085820 is about 6861.9108125944. The cubic root of 47085820 is about 361.1021265527.

The spelling of 47085820 in words is "forty-seven million, eighty-five thousand, eight hundred twenty".