20730799 has 2 divisors, whose sum is σ = 20730800. Its totient is φ = 20730798.

The previous prime is 20730781. The next prime is 20730823. The reversal of 20730799 is 99703702.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20730799 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20730719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10365399 + 10365400.

It is an arithmetic number, because the mean of its divisors is an integer number (10365400).

Almost surely, 2^20730799 is an apocalyptic number.

20730799 is a deficient number, since it is larger than the sum of its proper divisors (1).

20730799 is an equidigital number, since it uses as much as digits as its factorization.

20730799 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23814, while the sum is 37.

The square root of 20730799 is about 4553.1087182276. The cubic root of 20730799 is about 274.7084469296.

The spelling of 20730799 in words is "twenty million, seven hundred thirty thousand, seven hundred ninety-nine".