21922076 has 24 divisors (see below), whose sum is σ = 41971440. Its totient is φ = 9936000.

The previous prime is 21922073. The next prime is 21922081. The reversal of 21922076 is 67022912.

It is a super-2 number, since 2×21922076² = 961154832299552, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21922073) 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, 26030 + ... + 26858.

It is an arithmetic number, because the mean of its divisors is an integer number (1748810).

Almost surely, 2^21922076 is an apocalyptic number.

It is an amenable number.

21922076 is a deficient number, since it is larger than the sum of its proper divisors (20049364).

21922076 is a wasteful number, since it uses less digits than its factorization.

21922076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1445 (or 1443 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 21922076 is about 4682.1016648509. The cubic root of 21922076 is about 279.8727142545.

Adding to 21922076 its reverse (67022912), we get a palindrome (88944988).

The spelling of 21922076 in words is "twenty-one million, nine hundred twenty-two thousand, seventy-six".