20076491 has 2 divisors, whose sum is σ = 20076492. Its totient is φ = 20076490.

The previous prime is 20076479. The next prime is 20076509. The reversal of 20076491 is 19467002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20076491 - 2¹⁴ = 20060107 is a prime.

It is not a weakly prime, because it can be changed into another prime (20076421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10038245 + 10038246.

It is an arithmetic number, because the mean of its divisors is an integer number (10038246).

Almost surely, 2^20076491 is an apocalyptic number.

20076491 is a deficient number, since it is larger than the sum of its proper divisors (1).

20076491 is an equidigital number, since it uses as much as digits as its factorization.

20076491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 20076491 is about 4480.6797475383. The cubic root of 20076491 is about 271.7873689656.

The spelling of 20076491 in words is "twenty million, seventy-six thousand, four hundred ninety-one".