20426968 has 8 divisors (see below), whose sum is σ = 38300580. Its totient is φ = 10213480.

The previous prime is 20426953. The next prime is 20426969. The reversal of 20426968 is 86962402.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×20426968² = 834522043346048, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20426969) 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 as a sum of consecutive naturals, namely, 1276678 + ... + 1276693.

Almost surely, 2^20426968 is an apocalyptic number.

It is an amenable number.

20426968 is a deficient number, since it is larger than the sum of its proper divisors (17873612).

20426968 is a wasteful number, since it uses less digits than its factorization.

20426968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2553377 (or 2553373 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 37.

The square root of 20426968 is about 4519.6203380373. The cubic root of 20426968 is about 273.3597925341.

It can be divided in two parts, 204 and 26968, that added together give a palindrome (27172).

The spelling of 20426968 in words is "twenty million, four hundred twenty-six thousand, nine hundred sixty-eight".