20002618 has 8 divisors (see below), whose sum is σ = 30028320. Its totient is φ = 9993180.

The previous prime is 20002613. The next prime is 20002639. The reversal of 20002618 is 81620002.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 20002595 and 20002604.

It is not an unprimeable number, because it can be changed into a prime (20002613) by changing a digit.

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, 288 + ... + 6331.

It is an arithmetic number, because the mean of its divisors is an integer number (3753540).

Almost surely, 2^20002618 is an apocalyptic number.

20002618 is a deficient number, since it is larger than the sum of its proper divisors (10025702).

20002618 is a wasteful number, since it uses less digits than its factorization.

20002618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8132.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 20002618 is about 4472.4286467198. The cubic root of 20002618 is about 271.4536050516.

The spelling of 20002618 in words is "twenty million, two thousand, six hundred eighteen".