21794043 has 8 divisors (see below), whose sum is σ = 29187648. Its totient is φ = 14464904.

The previous prime is 21794039. The next prime is 21794107. The reversal of 21794043 is 34049712.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21794043 - 2² = 21794039 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21794043.

It is not an unprimeable number, because it can be changed into a prime (21794243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15321 + ... + 16682.

It is an arithmetic number, because the mean of its divisors is an integer number (3648456).

Almost surely, 2^21794043 is an apocalyptic number.

21794043 is a deficient number, since it is larger than the sum of its proper divisors (7393605).

21794043 is a wasteful number, since it uses less digits than its factorization.

21794043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32233.

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 21794043 is about 4668.4090437750. The cubic root of 21794043 is about 279.3267968325.

The spelling of 21794043 in words is "twenty-one million, seven hundred ninety-four thousand, forty-three".