47448618 has 16 divisors (see below), whose sum is σ = 108454080. Its totient is φ = 13556736.

The previous prime is 47448559. The next prime is 47448647. The reversal of 47448618 is 81684474.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 1129729 = 47448618 / (4 + 7 + 4 + 4 + 8 + 6 + 1 + 8).

It is a self number, because there is not a number n which added to its sum of digits gives 47448618.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 564823 + ... + 564906.

It is an arithmetic number, because the mean of its divisors is an integer number (6778380).

Almost surely, 2^47448618 is an apocalyptic number.

47448618 is an abundant number, since it is smaller than the sum of its proper divisors (61005462).

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

47448618 is a wasteful number, since it uses less digits than its factorization.

47448618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1129741.

The product of its digits is 172032, while the sum is 42.

The square root of 47448618 is about 6888.2957253591. The cubic root of 47448618 is about 362.0271898424.

The spelling of 47448618 in words is "forty-seven million, four hundred forty-eight thousand, six hundred eighteen".