20431676 has 6 divisors (see below), whose sum is σ = 35755440. Its totient is φ = 10215836.

The previous prime is 20431673. The next prime is 20431679. The reversal of 20431676 is 67613402.

It is an interprime number because it is at equal distance from previous prime (20431673) and next prime (20431679).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20431673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2553956 + ... + 2553963.

It is an arithmetic number, because the mean of its divisors is an integer number (5959240).

Almost surely, 2^20431676 is an apocalyptic number.

It is an amenable number.

20431676 is a deficient number, since it is larger than the sum of its proper divisors (15323764).

20431676 is a wasteful number, since it uses less digits than its factorization.

20431676 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5107923 (or 5107921 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 20431676 is about 4520.1411482386. The cubic root of 20431676 is about 273.3807922087.

The spelling of 20431676 in words is "twenty million, four hundred thirty-one thousand, six hundred seventy-six".