20705074 has 16 divisors (see below), whose sum is σ = 33707520. Its totient is φ = 9481680.

The previous prime is 20705071. The next prime is 20705081. The reversal of 20705074 is 47050702.

It is not an unprimeable number, because it can be changed into a prime (20705071) 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, 367 + ... + 6445.

It is an arithmetic number, because the mean of its divisors is an integer number (2106720).

Almost surely, 2^20705074 is an apocalyptic number.

20705074 is a deficient number, since it is larger than the sum of its proper divisors (13002446).

20705074 is a wasteful number, since it uses less digits than its factorization.

20705074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6225.

The product of its (nonzero) digits is 1960, while the sum is 25.

The square root of 20705074 is about 4550.2828483513. The cubic root of 20705074 is about 274.5947706562.

Adding to 20705074 its reverse (47050702), we get a palindrome (67755776).

The spelling of 20705074 in words is "twenty million, seven hundred five thousand, seventy-four".