20271466 has 16 divisors (see below), whose sum is σ = 31312008. Its totient is φ = 9836800.

The previous prime is 20271451. The next prime is 20271469. The reversal of 20271466 is 66417202.

It can be written as a sum of positive squares in 4 ways, for example, as 10791225 + 9480241 = 3285^2 + 3079^2 .

It is not an unprimeable number, because it can be changed into a prime (20271469) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18576 + ... + 19636.

Almost surely, 2^20271466 is an apocalyptic number.

20271466 is a deficient number, since it is larger than the sum of its proper divisors (11040542).

20271466 is a wasteful number, since it uses less digits than its factorization.

20271466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1337.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 20271466 is about 4502.3844793620. The cubic root of 20271466 is about 272.6643667912.

Adding to 20271466 its reverse (66417202), we get a palindrome (86688668).

The spelling of 20271466 in words is "twenty million, two hundred seventy-one thousand, four hundred sixty-six".