47784242 has 32 divisors (see below), whose sum is σ = 82080000. Its totient is φ = 20666880.

The previous prime is 47784227. The next prime is 47784251. The reversal of 47784242 is 24248774.

It is a junction number, because it is equal to n+sod(n) for n = 47784196 and 47784205.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37634 + ... + 38882.

It is an arithmetic number, because the mean of its divisors is an integer number (2565000).

Almost surely, 2^47784242 is an apocalyptic number.

47784242 is a deficient number, since it is larger than the sum of its proper divisors (34295758).

47784242 is a wasteful number, since it uses less digits than its factorization.

47784242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1346.

The product of its digits is 100352, while the sum is 38.

The square root of 47784242 is about 6912.6147006759. The cubic root of 47784242 is about 362.8787752264.

The spelling of 47784242 in words is "forty-seven million, seven hundred eighty-four thousand, two hundred forty-two".