47632778 has 8 divisors (see below), whose sum is σ = 71538660. Its totient is φ = 23786560.

The previous prime is 47632769. The next prime is 47632807. The reversal of 47632778 is 87723674.

47632778 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 42601729 + 5031049 = 6527^2 + 2243^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12863 + ... + 16146.

Almost surely, 2^47632778 is an apocalyptic number.

47632778 is a deficient number, since it is larger than the sum of its proper divisors (23905882).

47632778 is a wasteful number, since it uses less digits than its factorization.

47632778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29832.

The product of its digits is 395136, while the sum is 44.

The square root of 47632778 is about 6901.6503823361. The cubic root of 47632778 is about 362.4949579957.

The spelling of 47632778 in words is "forty-seven million, six hundred thirty-two thousand, seven hundred seventy-eight".