20014745 has 4 divisors (see below), whose sum is σ = 24017700. Its totient is φ = 16011792.

The previous prime is 20014721. The next prime is 20014751. The reversal of 20014745 is 54741002.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 14235529 + 5779216 = 3773^2 + 2404^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20014745 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20014745.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2001470 + ... + 2001479.

It is an arithmetic number, because the mean of its divisors is an integer number (6004425).

Almost surely, 2^20014745 is an apocalyptic number.

It is an amenable number.

20014745 is a deficient number, since it is larger than the sum of its proper divisors (4002955).

20014745 is an equidigital number, since it uses as much as digits as its factorization.

20014745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4002954.

The product of its (nonzero) digits is 1120, while the sum is 23.

The square root of 20014745 is about 4473.7841923812. The cubic root of 20014745 is about 271.5084520859.

Adding to 20014745 its reverse (54741002), we get a palindrome (74755747).

The spelling of 20014745 in words is "twenty million, fourteen thousand, seven hundred forty-five".