47185512 has 128 divisors (see below), whose sum is σ = 141696000. Its totient is φ = 12925440.

The previous prime is 47185511. The next prime is 47185517. The reversal of 47185512 is 21558174.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (47185511) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 115164 + ... + 115572.

It is an arithmetic number, because the mean of its divisors is an integer number (1107000).

Almost surely, 2^47185512 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 47185512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70848000).

47185512 is an abundant number, since it is smaller than the sum of its proper divisors (94510488).

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

47185512 is a wasteful number, since it uses less digits than its factorization.

47185512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 471 (or 467 counting only the distinct ones).

The product of its digits is 11200, while the sum is 33.

The square root of 47185512 is about 6869.1711290373. The cubic root of 47185512 is about 361.3567935761.

The spelling of 47185512 in words is "forty-seven million, one hundred eighty-five thousand, five hundred twelve".