20466650 has 12 divisors (see below), whose sum is σ = 38068062. Its totient is φ = 8186640.

The previous prime is 20466643. The next prime is 20466653. The reversal of 20466650 is 5666402.

It can be written as a sum of positive squares in 3 ways, for example, as 12909649 + 7557001 = 3593^2 + 2749^2 .

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20466653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 204617 + ... + 204716.

Almost surely, 2^20466650 is an apocalyptic number.

20466650 is a deficient number, since it is larger than the sum of its proper divisors (17601412).

20466650 is a wasteful number, since it uses less digits than its factorization.

20466650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409345 (or 409340 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 20466650 is about 4524.0081785956. The cubic root of 20466650 is about 273.5366901638.

The spelling of 20466650 in words is "twenty million, four hundred sixty-six thousand, six hundred fifty".