20049269 has 4 divisors (see below), whose sum is σ = 20067840. Its totient is φ = 20030700.

The previous prime is 20049257. The next prime is 20049277. The reversal of 20049269 is 96294002.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20049269 - 2²⁴ = 3272053 is a prime.

It is a super-2 number, since 2×20049269² = 803946374868722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20049209) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7559 + ... + 9860.

It is an arithmetic number, because the mean of its divisors is an integer number (5016960).

Almost surely, 2^20049269 is an apocalyptic number.

It is an amenable number.

20049269 is a deficient number, since it is larger than the sum of its proper divisors (18571).

20049269 is a wasteful number, since it uses less digits than its factorization.

20049269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18570.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 20049269 is about 4477.6410083882. The cubic root of 20049269 is about 271.6644732824.

The spelling of 20049269 in words is "twenty million, forty-nine thousand, two hundred sixty-nine".