21322834 has 8 divisors (see below), whose sum is σ = 34444620. Its totient is φ = 9841296.

The previous prime is 21322799. The next prime is 21322849. The reversal of 21322834 is 43822312.

It can be written as a sum of positive squares in 2 ways, for example, as 19492225 + 1830609 = 4415^2 + 1353^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 21322799 and 21322808.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 410029 + ... + 410080.

Almost surely, 2^21322834 is an apocalyptic number.

21322834 is a deficient number, since it is larger than the sum of its proper divisors (13121786).

21322834 is a wasteful number, since it uses less digits than its factorization.

21322834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 820124.

The product of its digits is 2304, while the sum is 25.

The square root of 21322834 is about 4617.6654274644. The cubic root of 21322834 is about 277.2990033294.

The spelling of 21322834 in words is "twenty-one million, three hundred twenty-two thousand, eight hundred thirty-four".