20271626 has 4 divisors (see below), whose sum is σ = 30407442. Its totient is φ = 10135812.

The previous prime is 20271623. The next prime is 20271661. The reversal of 20271626 is 62617202.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 20241001 + 30625 = 4499^2 + 175^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20271595 and 20271604.

It is not an unprimeable number, because it can be changed into a prime (20271623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5067905 + ... + 5067908.

Almost surely, 2^20271626 is an apocalyptic number.

20271626 is a deficient number, since it is larger than the sum of its proper divisors (10135816).

20271626 is a wasteful number, since it uses less digits than its factorization.

20271626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10135815.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 20271626 is about 4502.4022476896. The cubic root of 20271626 is about 272.6650841572.

Adding to 20271626 its reverse (62617202), we get a palindrome (82888828).

The spelling of 20271626 in words is "twenty million, two hundred seventy-one thousand, six hundred twenty-six".