21622010 has 16 divisors (see below), whose sum is σ = 39051936. Its totient is φ = 8619408.

The previous prime is 21621997. The next prime is 21622033. The reversal of 21622010 is 1022612.

It is a super-2 number, since 2×21622010² = 935022632880200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 452 + ... + 6591.

It is an arithmetic number, because the mean of its divisors is an integer number (2440746).

Almost surely, 2^21622010 is an apocalyptic number.

21622010 is a deficient number, since it is larger than the sum of its proper divisors (17429926).

21622010 is a wasteful number, since it uses less digits than its factorization.

21622010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7357.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 21622010 is about 4649.9473115295. The cubic root of 21622010 is about 278.5898917665.

Adding to 21622010 its reverse (1022612), we get a palindrome (22644622).

The spelling of 21622010 in words is "twenty-one million, six hundred twenty-two thousand, ten".