47978534 has 16 divisors (see below), whose sum is σ = 76826880. Its totient is φ = 22405320.

The previous prime is 47978527. The next prime is 47978551. The reversal of 47978534 is 43587974.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 6194 + ... + 11589.

It is an arithmetic number, because the mean of its divisors is an integer number (4801680).

Almost surely, 2^47978534 is an apocalyptic number.

47978534 is a deficient number, since it is larger than the sum of its proper divisors (28848346).

47978534 is a wasteful number, since it uses less digits than its factorization.

47978534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17875.

The product of its digits is 846720, while the sum is 47.

The square root of 47978534 is about 6926.6538819260. The cubic root of 47978534 is about 363.3699350571.

It can be divided in two parts, 4797 and 8534, that added together give a palindrome (13331).

The spelling of 47978534 in words is "forty-seven million, nine hundred seventy-eight thousand, five hundred thirty-four".