20671496 has 16 divisors (see below), whose sum is σ = 39195900. Its totient is φ = 10219264.

The previous prime is 20671477. The next prime is 20671499. The reversal of 20671496 is 69417602.

It can be written as a sum of positive squares in 2 ways, for example, as 19483396 + 1188100 = 4414^2 + 1090^2 .

It is not an unprimeable number, because it can be changed into a prime (20671499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13805 + ... + 15228.

Almost surely, 2^20671496 is an apocalyptic number.

It is an amenable number.

20671496 is a deficient number, since it is larger than the sum of its proper divisors (18524404).

20671496 is a wasteful number, since it uses less digits than its factorization.

20671496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29128 (or 29124 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 20671496 is about 4546.5916904864. The cubic root of 20671496 is about 274.4462509905.

The spelling of 20671496 in words is "twenty million, six hundred seventy-one thousand, four hundred ninety-six".