20116570 has 8 divisors (see below), whose sum is σ = 36209844. Its totient is φ = 8046624.

The previous prime is 20116543. The next prime is 20116619. The reversal of 20116570 is 7561102.

It can be written as a sum of positive squares in 2 ways, for example, as 19158129 + 958441 = 4377^2 + 979^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1005819 + ... + 1005838.

Almost surely, 2^20116570 is an apocalyptic number.

20116570 is a deficient number, since it is larger than the sum of its proper divisors (16093274).

20116570 is a wasteful number, since it uses less digits than its factorization.

20116570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2011664.

The product of its (nonzero) digits is 420, while the sum is 22.

The square root of 20116570 is about 4485.1499417522. The cubic root of 20116570 is about 271.9681064825.

Adding to 20116570 its reverse (7561102), we get a palindrome (27677672).

The spelling of 20116570 in words is "twenty million, one hundred sixteen thousand, five hundred seventy".