20093761 has 8 divisors (see below), whose sum is σ = 20449160. Its totient is φ = 19740672.

The previous prime is 20093747. The next prime is 20093783. The reversal of 20093761 is 16739002.

It can be written as a sum of positive squares in 4 ways, for example, as 6076225 + 14017536 = 2465^2 + 3744^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20093761 - 2²¹ = 17996609 is a prime.

It is a super-2 number, since 2×20093761² = 807518462250242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20093791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29521 + ... + 30193.

It is an arithmetic number, because the mean of its divisors is an integer number (2556145).

Almost surely, 2^20093761 is an apocalyptic number.

It is an amenable number.

20093761 is a deficient number, since it is larger than the sum of its proper divisors (355399).

20093761 is an equidigital number, since it uses as much as digits as its factorization.

20093761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1155.

The product of its (nonzero) digits is 2268, while the sum is 28.

The square root of 20093761 is about 4482.6064962252. The cubic root of 20093761 is about 271.8652780423.

It can be divided in two parts, 200 and 93761, that added together give a triangular number (93961 = T₄₃₃).

The spelling of 20093761 in words is "twenty million, ninety-three thousand, seven hundred sixty-one".