20314721 has 8 divisors (see below), whose sum is σ = 23783424. Its totient is φ = 16987680.

The previous prime is 20314687. The next prime is 20314751. The reversal of 20314721 is 12741302.

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 20314721 - 2¹⁰ = 20313697 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20314693 and 20314702.

It is not an unprimeable number, because it can be changed into a prime (20314751) 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, 35105 + ... + 35678.

It is an arithmetic number, because the mean of its divisors is an integer number (2972928).

Almost surely, 2^20314721 is an apocalyptic number.

It is an amenable number.

20314721 is a deficient number, since it is larger than the sum of its proper divisors (3468703).

20314721 is an equidigital number, since it uses as much as digits as its factorization.

20314721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70831.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 20314721 is about 4507.1854854221. The cubic root of 20314721 is about 272.8581649509.

The spelling of 20314721 in words is "twenty million, three hundred fourteen thousand, seven hundred twenty-one".