20249361 has 24 divisors (see below), whose sum is σ = 33299136. Its totient is φ = 11737440.

The previous prime is 20249357. The next prime is 20249387. The reversal of 20249361 is 16394202.

It is not a de Polignac number, because 20249361 - 2² = 20249357 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20249311) 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 23 ways as a sum of consecutive naturals, for example, 2170 + ... + 6723.

It is an arithmetic number, because the mean of its divisors is an integer number (1387464).

Almost surely, 2^20249361 is an apocalyptic number.

It is an amenable number.

20249361 is a deficient number, since it is larger than the sum of its proper divisors (13049775).

20249361 is a wasteful number, since it uses less digits than its factorization.

20249361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8933 (or 8930 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 20249361 is about 4499.9289994399. The cubic root of 20249361 is about 272.5652218822.

The spelling of 20249361 in words is "twenty million, two hundred forty-nine thousand, three hundred sixty-one".