20426061 has 16 divisors (see below), whose sum is σ = 29248128. Its totient is φ = 12633600.

The previous prime is 20426039. The next prime is 20426069. The reversal of 20426061 is 16062402.

It is a happy number.

It is not a de Polignac number, because 20426061 - 2⁹ = 20425549 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20426069) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 801 + ... + 6441.

It is an arithmetic number, because the mean of its divisors is an integer number (1828008).

Almost surely, 2^20426061 is an apocalyptic number.

It is an amenable number.

20426061 is a deficient number, since it is larger than the sum of its proper divisors (8822067).

20426061 is a wasteful number, since it uses less digits than its factorization.

20426061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5732.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 20426061 is about 4519.5199966368. The cubic root of 20426061 is about 273.3557465592.

Adding to 20426061 its reverse (16062402), we get a palindrome (36488463).

The spelling of 20426061 in words is "twenty million, four hundred twenty-six thousand, sixty-one".