21936050 has 12 divisors (see below), whose sum is σ = 40801146. Its totient is φ = 8774400.

The previous prime is 21936037. The next prime is 21936059. The reversal of 21936050 is 5063912.

It can be written as a sum of positive squares in 3 ways, for example, as 18207289 + 3728761 = 4267^2 + 1931^2 .

It is not an unprimeable number, because it can be changed into a prime (21936059) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 219311 + ... + 219410.

Almost surely, 2^21936050 is an apocalyptic number.

21936050 is a deficient number, since it is larger than the sum of its proper divisors (18865096).

21936050 is a wasteful number, since it uses less digits than its factorization.

21936050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438733 (or 438728 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 21936050 is about 4683.5937056922. The cubic root of 21936050 is about 279.9321689431.

Adding to 21936050 its reverse (5063912), we get a palindrome (26999962).

The spelling of 21936050 in words is "twenty-one million, nine hundred thirty-six thousand, fifty".