20026249 has 8 divisors (see below), whose sum is σ = 20348928. Its totient is φ = 19706400.

The previous prime is 20026241. The next prime is 20026267. The reversal of 20026249 is 94262002.

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 20026249 - 2³ = 20026241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20026241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16824 + ... + 17974.

It is an arithmetic number, because the mean of its divisors is an integer number (2543616).

Almost surely, 2^20026249 is an apocalyptic number.

It is an amenable number.

20026249 is a deficient number, since it is larger than the sum of its proper divisors (322679).

20026249 is a wasteful number, since it uses less digits than its factorization.

20026249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1415.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 20026249 is about 4475.0697201273. The cubic root of 20026249 is about 271.5604609923.

The spelling of 20026249 in words is "twenty million, twenty-six thousand, two hundred forty-nine".