20149586 has 8 divisors (see below), whose sum is σ = 30381564. Its totient is φ = 10022400.

The previous prime is 20149559. The next prime is 20149589. The reversal of 20149586 is 68594102.

It can be written as a sum of positive squares in 2 ways, for example, as 20079361 + 70225 = 4481^2 + 265^2 .

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

It is a Curzon number.

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 3 ways as a sum of consecutive naturals, for example, 25715 + ... + 26486.

Almost surely, 2^20149586 is an apocalyptic number.

20149586 is a deficient number, since it is larger than the sum of its proper divisors (10231978).

20149586 is a wasteful number, since it uses less digits than its factorization.

20149586 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52396.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 20149586 is about 4488.8290232532. The cubic root of 20149586 is about 272.1168129320.

The spelling of 20149586 in words is "twenty million, one hundred forty-nine thousand, five hundred eighty-six".