47942784 has 48 divisors (see below), whose sum is σ = 137963670. Its totient is φ = 15980544.

The previous prime is 47942777. The next prime is 47942801. The reversal of 47942784 is 48724974.

It can be written as a sum of positive squares in only one way, i.e., 24206400 + 23736384 = 4920^2 + 4872^2 .

It is a tau number, because it is divible by the number of its divisors (48).

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 5 ways as a sum of consecutive naturals, for example, 19657 + ... + 21960.

Almost surely, 2^47942784 is an apocalyptic number.

It is an amenable number.

47942784 is an abundant number, since it is smaller than the sum of its proper divisors (90020886).

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

47942784 is a wasteful number, since it uses less digits than its factorization.

47942784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41637 (or 41622 counting only the distinct ones).

The product of its digits is 451584, while the sum is 45.

The square root of 47942784 is about 6924.0727899120. The cubic root of 47942784 is about 363.2796606368.

The spelling of 47942784 in words is "forty-seven million, nine hundred forty-two thousand, seven hundred eighty-four".