22051432 has 32 divisors (see below), whose sum is σ = 45571680. Its totient is φ = 9938880.

The previous prime is 22051423. The next prime is 22051433. The reversal of 22051432 is 23415022.

It is not an unprimeable number, because it can be changed into a prime (22051433) 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, 2007 + ... + 6937.

It is an arithmetic number, because the mean of its divisors is an integer number (1424115).

Almost surely, 2^22051432 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22051432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22785840).

22051432 is an abundant number, since it is smaller than the sum of its proper divisors (23520248).

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

22051432 is a wasteful number, since it uses less digits than its factorization.

22051432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4993 (or 4989 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 22051432 is about 4695.8952288142. The cubic root of 22051432 is about 280.4221184110.

Adding to 22051432 its reverse (23415022), we get a palindrome (45466454).

The spelling of 22051432 in words is "twenty-two million, fifty-one thousand, four hundred thirty-two".