20386613 has 8 divisors (see below), whose sum is σ = 22124256. Its totient is φ = 18673200.

The previous prime is 20386571. The next prime is 20386631. The reversal of 20386613 is 31668302.

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

It is not a de Polignac number, because 20386613 - 2⁶ = 20386549 is a prime.

It is a super-2 number, since 2×20386613² = 831227979223538, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20386013) 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 7 ways as a sum of consecutive naturals, for example, 4283 + ... + 7688.

It is an arithmetic number, because the mean of its divisors is an integer number (2765532).

Almost surely, 2^20386613 is an apocalyptic number.

It is an amenable number.

20386613 is a deficient number, since it is larger than the sum of its proper divisors (1737643).

20386613 is a wasteful number, since it uses less digits than its factorization.

20386613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12115.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 20386613 is about 4515.1537072397. The cubic root of 20386613 is about 273.1796596352.

The spelling of 20386613 in words is "twenty million, three hundred eighty-six thousand, six hundred thirteen".