47278238 has 24 divisors (see below), whose sum is σ = 82735272. Its totient is φ = 20203344.

The previous prime is 47278223. The next prime is 47278249. The reversal of 47278238 is 83287274.

47278238 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 47278195 and 47278204.

It is a congruent 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 11 ways as a sum of consecutive naturals, for example, 59681 + ... + 60467.

It is an arithmetic number, because the mean of its divisors is an integer number (3447303).

Almost surely, 2^47278238 is an apocalyptic number.

47278238 is a deficient number, since it is larger than the sum of its proper divisors (35457034).

47278238 is a wasteful number, since it uses less digits than its factorization.

47278238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1416 (or 1409 counting only the distinct ones).

The product of its digits is 150528, while the sum is 41.

The square root of 47278238 is about 6875.9172479023. The cubic root of 47278238 is about 361.5933439057.

The spelling of 47278238 in words is "forty-seven million, two hundred seventy-eight thousand, two hundred thirty-eight".