20016770 has 8 divisors (see below), whose sum is σ = 36030204. Its totient is φ = 8006704.

The previous prime is 20016767. The next prime is 20016781. The reversal of 20016770 is 7761002.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 18550249 + 1466521 = 4307^2 + 1211^2 .

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 (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1000829 + ... + 1000848.

Almost surely, 2^20016770 is an apocalyptic number.

20016770 is a deficient number, since it is larger than the sum of its proper divisors (16013434).

20016770 is a wasteful number, since it uses less digits than its factorization.

20016770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2001684.

The product of its (nonzero) digits is 588, while the sum is 23.

The square root of 20016770 is about 4474.0105051285. The cubic root of 20016770 is about 271.5176084366.

Adding to 20016770 its reverse (7761002), we get a palindrome (27777772).

The spelling of 20016770 in words is "twenty million, sixteen thousand, seven hundred seventy".