47978678 has 12 divisors (see below), whose sum is σ = 79105740. Its totient is φ = 21808380.

The previous prime is 47978659. The next prime is 47978687. The reversal of 47978678 is 87687974.

47978678 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 5 ways as a sum of consecutive naturals, for example, 98888 + ... + 99371.

It is an arithmetic number, because the mean of its divisors is an integer number (6592145).

Almost surely, 2^47978678 is an apocalyptic number.

47978678 is a deficient number, since it is larger than the sum of its proper divisors (31127062).

47978678 is a wasteful number, since it uses less digits than its factorization.

47978678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198283 (or 198272 counting only the distinct ones).

The product of its digits is 4741632, while the sum is 56.

The square root of 47978678 is about 6926.6642765476. The cubic root of 47978678 is about 363.3702985892.

The spelling of 47978678 in words is "forty-seven million, nine hundred seventy-eight thousand, six hundred seventy-eight".