21792041 has 4 divisors (see below), whose sum is σ = 21831312. Its totient is φ = 21752772.

The previous prime is 21792007. The next prime is 21792049. The reversal of 21792041 is 14029712.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21792041 - 2¹⁰ = 21791017 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21792041.

It is not an unprimeable number, because it can be changed into a prime (21792049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18791 + ... + 19916.

It is an arithmetic number, because the mean of its divisors is an integer number (5457828).

Almost surely, 2^21792041 is an apocalyptic number.

It is an amenable number.

21792041 is a deficient number, since it is larger than the sum of its proper divisors (39271).

21792041 is an equidigital number, since it uses as much as digits as its factorization.

21792041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39270.

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 21792041 is about 4668.1946189078. The cubic root of 21792041 is about 279.3182435874.

The spelling of 21792041 in words is "twenty-one million, seven hundred ninety-two thousand, forty-one".