47477718 has 48 divisors (see below), whose sum is σ = 107877840. Its totient is φ = 15477696.

The previous prime is 47477707. The next prime is 47477767. The reversal of 47477718 is 81777474.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 151530 + ... + 151842.

It is an arithmetic number, because the mean of its divisors is an integer number (2247455).

Almost surely, 2^47477718 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 47477718, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53938920).

47477718 is an abundant number, since it is smaller than the sum of its proper divisors (60400122).

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

47477718 is a wasteful number, since it uses less digits than its factorization.

47477718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430 (or 371 counting only the distinct ones).

The product of its digits is 307328, while the sum is 45.

The square root of 47477718 is about 6890.4076802465. The cubic root of 47477718 is about 362.1011845389.

The spelling of 47477718 in words is "forty-seven million, four hundred seventy-seven thousand, seven hundred eighteen".