47193878 has 4 divisors (see below), whose sum is σ = 70790820. Its totient is φ = 23596938.

The previous prime is 47193877. The next prime is 47193893. The reversal of 47193878 is 87839174.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47193871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11798468 + ... + 11798471.

It is an arithmetic number, because the mean of its divisors is an integer number (17697705).

Almost surely, 2^47193878 is an apocalyptic number.

47193878 is a deficient number, since it is larger than the sum of its proper divisors (23596942).

47193878 is a wasteful number, since it uses less digits than its factorization.

47193878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23596941.

The product of its digits is 338688, while the sum is 47.

The square root of 47193878 is about 6869.7800547034. The cubic root of 47193878 is about 361.3781485228.

It can be divided in two parts, 471 and 93878, that added together give a palindrome (94349).

The spelling of 47193878 in words is "forty-seven million, one hundred ninety-three thousand, eight hundred seventy-eight".