20038605 has 8 divisors (see below), whose sum is σ = 32061792. Its totient is φ = 10687248.

The previous prime is 20038541. The next prime is 20038609. The reversal of 20038605 is 50683002.

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

It is not a de Polignac number, because 20038605 - 2⁶ = 20038541 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20038609) 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, 667939 + ... + 667968.

It is an arithmetic number, because the mean of its divisors is an integer number (4007724).

Almost surely, 2^20038605 is an apocalyptic number.

It is an amenable number.

20038605 is a deficient number, since it is larger than the sum of its proper divisors (12023187).

20038605 is a wasteful number, since it uses less digits than its factorization.

20038605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1335915.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 20038605 is about 4476.4500443990. The cubic root of 20038605 is about 271.6162995605.

The spelling of 20038605 in words is "twenty million, thirty-eight thousand, six hundred five".