21743050 has 96 divisors (see below), whose sum is σ = 50211072. Its totient is φ = 6842880.

The previous prime is 21743047. The next prime is 21743063. The reversal of 21743050 is 5034712.

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 297814 + ... + 297886.

It is an arithmetic number, because the mean of its divisors is an integer number (523032).

Almost surely, 2^21743050 is an apocalyptic number.

21743050 is an abundant number, since it is smaller than the sum of its proper divisors (28468022).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21743050 is a wasteful number, since it uses less digits than its factorization.

21743050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152 (or 147 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 21743050 is about 4662.9443487994. The cubic root of 21743050 is about 279.1087734211.

Adding to 21743050 its reverse (5034712), we get a palindrome (26777762).

The spelling of 21743050 in words is "twenty-one million, seven hundred forty-three thousand, fifty".