20460879 has 6 divisors (see below), whose sum is σ = 29554616. Its totient is φ = 13640580.

The previous prime is 20460871. The next prime is 20460887. The reversal of 20460879 is 97806402.

It is an interprime number because it is at equal distance from previous prime (20460871) and next prime (20460887).

It is not a de Polignac number, because 20460879 - 2³ = 20460871 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 (20460871) 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 5 ways as a sum of consecutive naturals, for example, 1136707 + ... + 1136724.

Almost surely, 2^20460879 is an apocalyptic number.

20460879 is a deficient number, since it is larger than the sum of its proper divisors (9093737).

20460879 is a wasteful number, since it uses less digits than its factorization.

20460879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2273437 (or 2273434 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 20460879 is about 4523.3703142679. The cubic root of 20460879 is about 273.5109779502.

The spelling of 20460879 in words is "twenty million, four hundred sixty thousand, eight hundred seventy-nine".