22780873 has 2 divisors, whose sum is σ = 22780874. Its totient is φ = 22780872.

The previous prime is 22780859. The next prime is 22780889. The reversal of 22780873 is 37808722.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14417209 + 8363664 = 3797^2 + 2892^2 .

It is a cyclic number.

It is not a de Polignac number, because 22780873 - 2¹⁷ = 22649801 is a prime.

It is not a weakly prime, because it can be changed into another prime (22780843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11390436 + 11390437.

It is an arithmetic number, because the mean of its divisors is an integer number (11390437).

Almost surely, 2^22780873 is an apocalyptic number.

It is an amenable number.

22780873 is a deficient number, since it is larger than the sum of its proper divisors (1).

22780873 is an equidigital number, since it uses as much as digits as its factorization.

22780873 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 37632, while the sum is 37.

The square root of 22780873 is about 4772.9312796226. The cubic root of 22780873 is about 283.4806724639.

It can be divided in two parts, 22780 and 873, that added together give a triangular number (23653 = T₂₁₇).

The spelling of 22780873 in words is "twenty-two million, seven hundred eighty thousand, eight hundred seventy-three".