21822076 has 6 divisors (see below), whose sum is σ = 38188640. Its totient is φ = 10911036.

The previous prime is 21822043. The next prime is 21822083. The reversal of 21822076 is 67022812.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2727756 + ... + 2727763.

Almost surely, 2^21822076 is an apocalyptic number.

It is an amenable number.

21822076 is a deficient number, since it is larger than the sum of its proper divisors (16366564).

21822076 is a wasteful number, since it uses less digits than its factorization.

21822076 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5455523 (or 5455521 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 21822076 is about 4671.4104936304. The cubic root of 21822076 is about 279.4465086450.

Adding to 21822076 its reverse (67022812), we get a palindrome (88844888).

The spelling of 21822076 in words is "twenty-one million, eight hundred twenty-two thousand, seventy-six".