21824150 has 12 divisors (see below), whose sum is σ = 40593012. Its totient is φ = 8729640.

The previous prime is 21824149. The next prime is 21824161. The reversal of 21824150 is 5142812.

It is a congruent number.

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, 218192 + ... + 218291.

It is an arithmetic number, because the mean of its divisors is an integer number (3382751).

Almost surely, 2^21824150 is an apocalyptic number.

21824150 is a deficient number, since it is larger than the sum of its proper divisors (18768862).

21824150 is a wasteful number, since it uses less digits than its factorization.

21824150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436495 (or 436490 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 23.

The square root of 21824150 is about 4671.6324769828. The cubic root of 21824150 is about 279.4553613576.

Adding to 21824150 its reverse (5142812), we get a palindrome (26966962).

The spelling of 21824150 in words is "twenty-one million, eight hundred twenty-four thousand, one hundred fifty".