20426479 has 8 divisors (see below), whose sum is σ = 21217680. Its totient is φ = 19647936.

The previous prime is 20426473. The next prime is 20426509. The reversal of 20426479 is 97462402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20426479 - 2⁵ = 20426447 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20426473) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 192 + ... + 6394.

It is an arithmetic number, because the mean of its divisors is an integer number (2652210).

Almost surely, 2^20426479 is an apocalyptic number.

20426479 is a deficient number, since it is larger than the sum of its proper divisors (791201).

20426479 is an equidigital number, since it uses as much as digits as its factorization.

20426479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6329.

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 20426479 is about 4519.5662402492. The cubic root of 20426479 is about 273.3576112020.

The spelling of 20426479 in words is "twenty million, four hundred twenty-six thousand, four hundred seventy-nine".