20246679 has 20 divisors (see below), whose sum is σ = 30953736. Its totient is φ = 13181616.

The previous prime is 20246657. The next prime is 20246683. The reversal of 20246679 is 97664202.

It is a happy number.

It is not a de Polignac number, because 20246679 - 2²⁴ = 3469463 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20245679) 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 in 19 ways as a sum of consecutive naturals, for example, 577 + ... + 6389.

Almost surely, 2^20246679 is an apocalyptic number.

20246679 is a deficient number, since it is larger than the sum of its proper divisors (10707057).

20246679 is an equidigital number, since it uses as much as digits as its factorization.

20246679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5868 (or 5859 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 20246679 is about 4499.6309848698. The cubic root of 20246679 is about 272.5531877213.

The spelling of 20246679 in words is "twenty million, two hundred forty-six thousand, six hundred seventy-nine".