20426055 has 48 divisors (see below), whose sum is σ = 36701280. Its totient is φ = 9642240.

The previous prime is 20426039. The next prime is 20426069. The reversal of 20426055 is 55062402.

It is not a de Polignac number, because 20426055 - 2⁴ = 20426039 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 187341 + ... + 187449.

It is an arithmetic number, because the mean of its divisors is an integer number (764610).

Almost surely, 2^20426055 is an apocalyptic number.

20426055 is a deficient number, since it is larger than the sum of its proper divisors (16275225).

20426055 is a wasteful number, since it uses less digits than its factorization.

20426055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192 (or 161 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 20426055 is about 4519.5193328495. The cubic root of 20426055 is about 273.3557197938.

Adding to 20426055 its reverse (55062402), we get a palindrome (75488457).

The spelling of 20426055 in words is "twenty million, four hundred twenty-six thousand, fifty-five".