47678478 has 16 divisors (see below), whose sum is σ = 95943936. Its totient is φ = 15795000.

The previous prime is 47678461. The next prime is 47678479. The reversal of 47678478 is 87487674.

It is a self number, because there is not a number n which added to its sum of digits gives 47678478.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47678479) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23398 + ... + 25353.

It is an arithmetic number, because the mean of its divisors is an integer number (5996496).

Almost surely, 2^47678478 is an apocalyptic number.

47678478 is an abundant number, since it is smaller than the sum of its proper divisors (48265458).

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

47678478 is a wasteful number, since it uses less digits than its factorization.

47678478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48919.

The product of its digits is 2107392, while the sum is 51.

The square root of 47678478 is about 6904.9603909074. The cubic root of 47678478 is about 362.6108496509.

The spelling of 47678478 in words is "forty-seven million, six hundred seventy-eight thousand, four hundred seventy-eight".