21283041 has 16 divisors (see below), whose sum is σ = 30808064. Its totient is φ = 12991104.

The previous prime is 21283039. The next prime is 21283091. The reversal of 21283041 is 14038212.

It is not a de Polignac number, because 21283041 - 2¹ = 21283039 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21282999 and 21283017.

It is not an unprimeable number, because it can be changed into a prime (21283001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2805 + ... + 7101.

It is an arithmetic number, because the mean of its divisors is an integer number (1925504).

Almost surely, 2^21283041 is an apocalyptic number.

It is an amenable number.

21283041 is a deficient number, since it is larger than the sum of its proper divisors (9525023).

21283041 is a wasteful number, since it uses less digits than its factorization.

21283041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4440.

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 21283041 is about 4613.3546362707. The cubic root of 21283041 is about 277.1263960257.

The spelling of 21283041 in words is "twenty-one million, two hundred eighty-three thousand, forty-one".