20268349 has 8 divisors (see below), whose sum is σ = 20520000. Its totient is φ = 20018592.

The previous prime is 20268331. The next prime is 20268373. The reversal of 20268349 is 94386202.

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 20268349 - 2⁵ = 20268317 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20268379) 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, 35337 + ... + 35905.

It is an arithmetic number, because the mean of its divisors is an integer number (2565000).

Almost surely, 2^20268349 is an apocalyptic number.

It is an amenable number.

20268349 is a deficient number, since it is larger than the sum of its proper divisors (251651).

20268349 is a wasteful number, since it uses less digits than its factorization.

20268349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 947.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 20268349 is about 4502.0383161408. The cubic root of 20268349 is about 272.6503908509.

The spelling of 20268349 in words is "twenty million, two hundred sixty-eight thousand, three hundred forty-nine".