20770093 has 6 divisors (see below), whose sum is σ = 21462702. Its totient is φ = 20099160.

The previous prime is 20770049. The next prime is 20770109. The reversal of 20770093 is 39007702.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 20766249 + 3844 = 4557^2 + 62^2 .

It is not a de Polignac number, because 20770093 - 2¹³ = 20761901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20710093) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9846 + ... + 11767.

It is an arithmetic number, because the mean of its divisors is an integer number (3577117).

Almost surely, 2^20770093 is an apocalyptic number.

It is an amenable number.

20770093 is a deficient number, since it is larger than the sum of its proper divisors (692609).

20770093 is an equidigital number, since it uses as much as digits as its factorization.

20770093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21675 (or 21644 counting only the distinct ones).

The product of its (nonzero) digits is 2646, while the sum is 28.

The square root of 20770093 is about 4557.4217491911. The cubic root of 20770093 is about 274.8819019074.

Adding to 20770093 its reverse (39007702), we get a palindrome (59777795).

The spelling of 20770093 in words is "twenty million, seven hundred seventy thousand, ninety-three".