20037385 has 4 divisors (see below), whose sum is σ = 24044868. Its totient is φ = 16029904.

The previous prime is 20037359. The next prime is 20037401. The reversal of 20037385 is 58373002.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7441984 + 12595401 = 2728^2 + 3549^2 .

It is a cyclic number.

It is not a de Polignac number, because 20037385 - 2⁷ = 20037257 is a prime.

It is a Duffinian number.

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 3 ways as a sum of consecutive naturals, for example, 2003734 + ... + 2003743.

It is an arithmetic number, because the mean of its divisors is an integer number (6011217).

Almost surely, 2^20037385 is an apocalyptic number.

It is an amenable number.

20037385 is a deficient number, since it is larger than the sum of its proper divisors (4007483).

20037385 is an equidigital number, since it uses as much as digits as its factorization.

20037385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4007482.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 20037385 is about 4476.3137736312. The cubic root of 20037385 is about 271.6107872238.

The spelling of 20037385 in words is "twenty million, thirty-seven thousand, three hundred eighty-five".