20259673 has 4 divisors (see below), whose sum is σ = 23153920. Its totient is φ = 17365428.

The previous prime is 20259671. The next prime is 20259713. The reversal of 20259673 is 37695202.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20259673 - 2¹ = 20259671 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20259671) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1447113 + ... + 1447126.

It is an arithmetic number, because the mean of its divisors is an integer number (5788480).

Almost surely, 2^20259673 is an apocalyptic number.

It is an amenable number.

20259673 is a deficient number, since it is larger than the sum of its proper divisors (2894247).

20259673 is an equidigital number, since it uses as much as digits as its factorization.

20259673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2894246.

The product of its (nonzero) digits is 22680, while the sum is 34.

The square root of 20259673 is about 4501.0746494587. The cubic root of 20259673 is about 272.6114820347.

The spelling of 20259673 in words is "twenty million, two hundred fifty-nine thousand, six hundred seventy-three".