20426049 has 12 divisors (see below), whose sum is σ = 33719296. Its totient is φ = 11671992.

The previous prime is 20426039. The next prime is 20426069. The reversal of 20426049 is 94062402.

It is not a de Polignac number, because 20426049 - 2⁵ = 20426017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20426009) 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 11 ways as a sum of consecutive naturals, for example, 162049 + ... + 162174.

Almost surely, 2^20426049 is an apocalyptic number.

It is an amenable number.

20426049 is a deficient number, since it is larger than the sum of its proper divisors (13293247).

20426049 is a wasteful number, since it uses less digits than its factorization.

20426049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324236 (or 324233 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 20426049 is about 4519.5186690620. The cubic root of 20426049 is about 273.3556930284.

The spelling of 20426049 in words is "twenty million, four hundred twenty-six thousand, forty-nine".