47642618 has 16 divisors (see below), whose sum is σ = 73150560. Its totient is φ = 23264496.

The previous prime is 47642611. The next prime is 47642657. The reversal of 47642618 is 81624674.

It is not an unprimeable number, because it can be changed into a prime (47642611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17996 + ... + 20472.

It is an arithmetic number, because the mean of its divisors is an integer number (4571910).

Almost surely, 2^47642618 is an apocalyptic number.

47642618 is a deficient number, since it is larger than the sum of its proper divisors (25507942).

47642618 is a wasteful number, since it uses less digits than its factorization.

47642618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2701.

The product of its digits is 64512, while the sum is 38.

The square root of 47642618 is about 6902.3632184926. The cubic root of 47642618 is about 362.5199177324.

The spelling of 47642618 in words is "forty-seven million, six hundred forty-two thousand, six hundred eighteen".