22051632 has 40 divisors (see below), whose sum is σ = 57161520. Its totient is φ = 7325440.

The previous prime is 22051607. The next prime is 22051637. The reversal of 22051632 is 23615022.

It is a junction number, because it is equal to n+sod(n) for n = 22051599 and 22051608.

It is not an unprimeable number, because it can be changed into a prime (22051637) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 18082 + ... + 19262.

It is an arithmetic number, because the mean of its divisors is an integer number (1429038).

Almost surely, 2^22051632 is an apocalyptic number.

It is an amenable number.

22051632 is an abundant number, since it is smaller than the sum of its proper divisors (35109888).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22051632 is a wasteful number, since it uses less digits than its factorization.

22051632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1581 (or 1575 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 22051632 is about 4695.9165239599. The cubic root of 22051632 is about 280.4229661905.

Adding to 22051632 its reverse (23615022), we get a palindrome (45666654).

The spelling of 22051632 in words is "twenty-two million, fifty-one thousand, six hundred thirty-two".