20149585 has 8 divisors (see below), whose sum is σ = 24742080. Its totient is φ = 15744624.

The previous prime is 20149559. The next prime is 20149589. The reversal of 20149585 is 58594102.

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

It is a cyclic number.

It is not a de Polignac number, because 20149585 - 2⁵ = 20149553 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20149585.

It is not an unprimeable number, because it can be changed into a prime (20149589) 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, 46645 + ... + 47074.

It is an arithmetic number, because the mean of its divisors is an integer number (3092760).

Almost surely, 2^20149585 is an apocalyptic number.

It is an amenable number.

20149585 is a deficient number, since it is larger than the sum of its proper divisors (4592495).

20149585 is an equidigital number, since it uses as much as digits as its factorization.

20149585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93767.

The product of its (nonzero) digits is 14400, while the sum is 34.

The square root of 20149585 is about 4488.8289118655. The cubic root of 20149585 is about 272.1168084303.

The spelling of 20149585 in words is "twenty million, one hundred forty-nine thousand, five hundred eighty-five".