20386413 has 12 divisors (see below), whose sum is σ = 29506048. Its totient is φ = 13563720.

The previous prime is 20386409. The next prime is 20386423. The reversal of 20386413 is 31468302.

It is a happy number.

It is not a de Polignac number, because 20386413 - 2² = 20386409 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20386423) 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 11 ways as a sum of consecutive naturals, for example, 3156 + ... + 7122.

Almost surely, 2^20386413 is an apocalyptic number.

It is an amenable number.

20386413 is a deficient number, since it is larger than the sum of its proper divisors (9119635).

20386413 is a wasteful number, since it uses less digits than its factorization.

20386413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4544 (or 4541 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 20386413 is about 4515.1315595451. The cubic root of 20386413 is about 273.1787663021.

The spelling of 20386413 in words is "twenty million, three hundred eighty-six thousand, four hundred thirteen".