21622034 has 32 divisors (see below), whose sum is σ = 38755200. Its totient is φ = 9038736.

The previous prime is 21622033. The next prime is 21622037. The reversal of 21622034 is 43022612.

It is a junction number, because it is equal to n+sod(n) for n = 21621997 and 21622015.

It is not an unprimeable number, because it can be changed into a prime (21622033) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29132 + ... + 29864.

It is an arithmetic number, because the mean of its divisors is an integer number (1211100).

Almost surely, 2^21622034 is an apocalyptic number.

21622034 is a deficient number, since it is larger than the sum of its proper divisors (17133166).

21622034 is an equidigital number, since it uses as much as digits as its factorization.

21622034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 799 (or 785 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 21622034 is about 4649.9498922031. The cubic root of 21622034 is about 278.5899948428.

Adding to 21622034 its reverse (43022612), we get a palindrome (64644646).

The spelling of 21622034 in words is "twenty-one million, six hundred twenty-two thousand, thirty-four".