47185146 has 48 divisors (see below), whose sum is σ = 108700800. Its totient is φ = 15171408.

The previous prime is 47185123. The next prime is 47185153. The reversal of 47185146 is 64158174.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 47185146.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 44895 + ... + 45933.

It is an arithmetic number, because the mean of its divisors is an integer number (2264600).

Almost surely, 2^47185146 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 47185146, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54350400).

47185146 is an abundant number, since it is smaller than the sum of its proper divisors (61515654).

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

47185146 is a wasteful number, since it uses less digits than its factorization.

47185146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1108 (or 1073 counting only the distinct ones).

The product of its digits is 26880, while the sum is 36.

The square root of 47185146 is about 6869.1444882169. The cubic root of 47185146 is about 361.3558592714.

It can be divided in two parts, 47 and 185146, that added together give a cube (185193 = 57³).

The spelling of 47185146 in words is "forty-seven million, one hundred eighty-five thousand, one hundred forty-six".