20386668 has 24 divisors (see below), whose sum is σ = 47839680. Its totient is φ = 6756880.

The previous prime is 20386657. The next prime is 20386679. The reversal of 20386668 is 86668302.

It is an interprime number because it is at equal distance from previous prime (20386657) and next prime (20386679).

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 7 ways as a sum of consecutive naturals, for example, 2598 + ... + 6893.

It is an arithmetic number, because the mean of its divisors is an integer number (1993320).

Almost surely, 2^20386668 is an apocalyptic number.

It is an amenable number.

20386668 is an abundant number, since it is smaller than the sum of its proper divisors (27453012).

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

20386668 is a wasteful number, since it uses less digits than its factorization.

20386668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9677 (or 9675 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 39.

The square root of 20386668 is about 4515.1597978366. The cubic root of 20386668 is about 273.1799053008.

The spelling of 20386668 in words is "twenty million, three hundred eighty-six thousand, six hundred sixty-eight".