21741038 has 12 divisors (see below), whose sum is σ = 35846160. Its totient is φ = 9882180.

The previous prime is 21741023. The next prime is 21741043. The reversal of 21741038 is 83014712.

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 21740998 and 21741016.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 44678 + ... + 45161.

It is an arithmetic number, because the mean of its divisors is an integer number (2987180).

Almost surely, 2^21741038 is an apocalyptic number.

21741038 is a deficient number, since it is larger than the sum of its proper divisors (14105122).

21741038 is a wasteful number, since it uses less digits than its factorization.

21741038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89863 (or 89852 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 21741038 is about 4662.7286002940. The cubic root of 21741038 is about 279.1001640160.

The spelling of 21741038 in words is "twenty-one million, seven hundred forty-one thousand, thirty-eight".