20066293 has 8 divisors (see below), whose sum is σ = 21834008. Its totient is φ = 18330624.

The previous prime is 20066279. The next prime is 20066297. The reversal of 20066293 is 39266002.

It can be written as a sum of positive squares in 4 ways, for example, as 2241009 + 17825284 = 1497^2 + 4222^2 .

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

It is not a de Polignac number, because 20066293 - 2⁹ = 20065781 is a prime.

It is a super-2 number, since 2×20066293² = 805312229523698, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20066297) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6696 + ... + 9217.

It is an arithmetic number, because the mean of its divisors is an integer number (2729251).

Almost surely, 2^20066293 is an apocalyptic number.

It is an amenable number.

20066293 is a deficient number, since it is larger than the sum of its proper divisors (1767715).

20066293 is a wasteful number, since it uses less digits than its factorization.

20066293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16023.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 20066293 is about 4479.5416060128. The cubic root of 20066293 is about 271.7413423796.

The spelling of 20066293 in words is "twenty million, sixty-six thousand, two hundred ninety-three".