20140993 has 8 divisors (see below), whose sum is σ = 20926080. Its totient is φ = 19362000.

The previous prime is 20140949. The next prime is 20140997. The reversal of 20140993 is 39904102.

It is a happy number.

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 20140993 - 2²¹ = 18043841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20140997) 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, 5896 + ... + 8662.

It is an arithmetic number, because the mean of its divisors is an integer number (2615760).

Almost surely, 2^20140993 is an apocalyptic number.

It is an amenable number.

20140993 is a deficient number, since it is larger than the sum of its proper divisors (785087).

20140993 is a wasteful number, since it uses less digits than its factorization.

20140993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3047.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 20140993 is about 4487.8717673303. The cubic root of 20140993 is about 272.0781250858.

It can be divided in two parts, 2014099 and 3, that added together give a palindrome (2014102).

The spelling of 20140993 in words is "twenty million, one hundred forty thousand, nine hundred ninety-three".