20714993 has 16 divisors (see below), whose sum is σ = 23990400. Its totient is φ = 17715456.

The previous prime is 20714983. The next prime is 20715007. The reversal of 20714993 is 39941702.

It is a cyclic number.

It is not a de Polignac number, because 20714993 - 2⁴ = 20714977 is a prime.

It is a super-2 number, since 2×20714993² = 858221869980098, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20714923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14108 + ... + 15506.

It is an arithmetic number, because the mean of its divisors is an integer number (1499400).

Almost surely, 2^20714993 is an apocalyptic number.

It is an amenable number.

20714993 is a deficient number, since it is larger than the sum of its proper divisors (3275407).

20714993 is a wasteful number, since it uses less digits than its factorization.

20714993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1496.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 20714993 is about 4551.3726500914. The cubic root of 20714993 is about 274.6386128999.

The spelling of 20714993 in words is "twenty million, seven hundred fourteen thousand, nine hundred ninety-three".