22780043 has 16 divisors (see below), whose sum is σ = 26914272. Its totient is φ = 19008000.

The previous prime is 22780039. The next prime is 22780061. The reversal of 22780043 is 34008722.

It is not a de Polignac number, because 22780043 - 2² = 22780039 is a prime.

It is a Smith number, since the sum of its digits (26) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 22779994 and 22780021.

It is not an unprimeable number, because it can be changed into a prime (22780003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34133 + ... + 34793.

It is an arithmetic number, because the mean of its divisors is an integer number (1682142).

Almost surely, 2^22780043 is an apocalyptic number.

22780043 is a deficient number, since it is larger than the sum of its proper divisors (4134229).

22780043 is a wasteful number, since it uses less digits than its factorization.

22780043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 926.

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 22780043 is about 4772.8443301662. The cubic root of 22780043 is about 283.4772296368.

Adding to 22780043 its reverse (34008722), we get a palindrome (56788765).

The spelling of 22780043 in words is "twenty-two million, seven hundred eighty thousand, forty-three".