20887483 has 2 divisors, whose sum is σ = 20887484. Its totient is φ = 20887482.

The previous prime is 20887457. The next prime is 20887541. The reversal of 20887483 is 38478802.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20887483 is a prime.

It is not a weakly prime, because it can be changed into another prime (20887423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10443741 + 10443742.

It is an arithmetic number, because the mean of its divisors is an integer number (10443742).

Almost surely, 2^20887483 is an apocalyptic number.

20887483 is a deficient number, since it is larger than the sum of its proper divisors (1).

20887483 is an equidigital number, since it uses as much as digits as its factorization.

20887483 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 86016, while the sum is 40.

The square root of 20887483 is about 4570.2825952013. The cubic root of 20887483 is about 275.3987955057.

The spelling of 20887483 in words is "twenty million, eight hundred eighty-seven thousand, four hundred eighty-three".