47420518 has 8 divisors (see below), whose sum is σ = 72865800. Its totient is φ = 23131920.

The previous prime is 47420507. The next prime is 47420537. The reversal of 47420518 is 81502474.

47420518 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 47420518.

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 3 ways as a sum of consecutive naturals, for example, 289068 + ... + 289231.

It is an arithmetic number, because the mean of its divisors is an integer number (9108225).

Almost surely, 2^47420518 is an apocalyptic number.

47420518 is a deficient number, since it is larger than the sum of its proper divisors (25445282).

47420518 is a wasteful number, since it uses less digits than its factorization.

47420518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 578342.

The product of its (nonzero) digits is 8960, while the sum is 31.

The square root of 47420518 is about 6886.2557315278. The cubic root of 47420518 is about 361.9557092013.

The spelling of 47420518 in words is "forty-seven million, four hundred twenty thousand, five hundred eighteen".