20387083 has 2 divisors, whose sum is σ = 20387084. Its totient is φ = 20387082.

The previous prime is 20387071. The next prime is 20387089. The reversal of 20387083 is 38078302.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20387083 - 2⁵ = 20387051 is a prime.

It is not a weakly prime, because it can be changed into another prime (20387089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10193541 + 10193542.

It is an arithmetic number, because the mean of its divisors is an integer number (10193542).

Almost surely, 2^20387083 is an apocalyptic number.

20387083 is a deficient number, since it is larger than the sum of its proper divisors (1).

20387083 is an equidigital number, since it uses as much as digits as its factorization.

20387083 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 20387083 is about 4515.2057538943. The cubic root of 20387083 is about 273.1817589451.

The spelling of 20387083 in words is "twenty million, three hundred eighty-seven thousand, eighty-three".