20027746 has 8 divisors (see below), whose sum is σ = 30608604. Its totient is φ = 9824880.

The previous prime is 20027741. The next prime is 20027783. The reversal of 20027746 is 64772002.

It can be written as a sum of positive squares in 2 ways, for example, as 17732521 + 2295225 = 4211^2 + 1515^2 .

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

It is a super-2 number, since 2×20027746² = 802221219681032, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20027741) by changing a digit.

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, 94365 + ... + 94576.

Almost surely, 2^20027746 is an apocalyptic number.

20027746 is a deficient number, since it is larger than the sum of its proper divisors (10580858).

20027746 is a wasteful number, since it uses less digits than its factorization.

20027746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188996.

The product of its (nonzero) digits is 4704, while the sum is 28.

The square root of 20027746 is about 4475.2369769656. The cubic root of 20027746 is about 271.5672273765.

Adding to 20027746 its reverse (64772002), we get a palindrome (84799748).

The spelling of 20027746 in words is "twenty million, twenty-seven thousand, seven hundred forty-six".