20260706 has 4 divisors (see below), whose sum is σ = 30391062. Its totient is φ = 10130352.

The previous prime is 20260703. The next prime is 20260729. The reversal of 20260706 is 60706202.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 60706202 = 2 ⋅30353101.

It can be written as a sum of positive squares in only one way, i.e., 19758025 + 502681 = 4445^2 + 709^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20260703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5065175 + ... + 5065178.

Almost surely, 2^20260706 is an apocalyptic number.

20260706 is a deficient number, since it is larger than the sum of its proper divisors (10130356).

20260706 is a wasteful number, since it uses less digits than its factorization.

20260706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10130355.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 20260706 is about 4501.1893983702. The cubic root of 20260706 is about 272.6161152598.

Adding to 20260706 its reverse (60706202), we get a palindrome (80966908).

The spelling of 20260706 in words is "twenty million, two hundred sixty thousand, seven hundred six".