47878472 has 16 divisors (see below), whose sum is σ = 89845740. Its totient is φ = 23919616.

The previous prime is 47878469. The next prime is 47878483. The reversal of 47878472 is 27487874.

It can be written as a sum of positive squares in 2 ways, for example, as 47803396 + 75076 = 6914^2 + 274^2 .

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 3 ways as a sum of consecutive naturals, for example, 16868 + ... + 19500.

Almost surely, 2^47878472 is an apocalyptic number.

It is an amenable number.

47878472 is a deficient number, since it is larger than the sum of its proper divisors (41967268).

47878472 is a wasteful number, since it uses less digits than its factorization.

47878472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4912 (or 4908 counting only the distinct ones).

The product of its digits is 702464, while the sum is 47.

The square root of 47878472 is about 6919.4271439188. The cubic root of 47878472 is about 363.1171495899.

The spelling of 47878472 in words is "forty-seven million, eight hundred seventy-eight thousand, four hundred seventy-two".