20541650 has 12 divisors (see below), whose sum is σ = 38207562. Its totient is φ = 8216640.

The previous prime is 20541637. The next prime is 20541667. The reversal of 20541650 is 5614502.

It can be written as a sum of positive squares in 3 ways, for example, as 13535041 + 7006609 = 3679^2 + 2647^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 205367 + ... + 205466.

Almost surely, 2^20541650 is an apocalyptic number.

20541650 is a deficient number, since it is larger than the sum of its proper divisors (17665912).

20541650 is a wasteful number, since it uses less digits than its factorization.

20541650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410845 (or 410840 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 20541650 is about 4532.2897083042. The cubic root of 20541650 is about 273.8704077530.

The spelling of 20541650 in words is "twenty million, five hundred forty-one thousand, six hundred fifty".