20426759 has 8 divisors (see below), whose sum is σ = 21448560. Its totient is φ = 19426176.

The previous prime is 20426743. The next prime is 20426761. The reversal of 20426759 is 95762402.

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 20426759 - 2⁴ = 20426743 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20426719) 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, 3314 + ... + 7199.

It is an arithmetic number, because the mean of its divisors is an integer number (2681070).

Almost surely, 2^20426759 is an apocalyptic number.

20426759 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

20426759 is a deficient number, since it is larger than the sum of its proper divisors (1021801).

20426759 is a wasteful number, since it uses less digits than its factorization.

20426759 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10609.

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 20426759 is about 4519.5972165670. The cubic root of 20426759 is about 273.3588602308.

The spelling of 20426759 in words is "twenty million, four hundred twenty-six thousand, seven hundred fifty-nine".