22280775 has 48 divisors (see below), whose sum is σ = 40711680. Its totient is φ = 10662400.

The previous prime is 22280743. The next prime is 22280779. The reversal of 22280775 is 57708222.

It is not a de Polignac number, because 22280775 - 2⁵ = 22280743 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22280779) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 93106 + ... + 93344.

It is an arithmetic number, because the mean of its divisors is an integer number (848160).

Almost surely, 2^22280775 is an apocalyptic number.

22280775 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

22280775 is a deficient number, since it is larger than the sum of its proper divisors (18430905).

22280775 is a wasteful number, since it uses less digits than its factorization.

22280775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376 (or 371 counting only the distinct ones).

The product of its (nonzero) digits is 15680, while the sum is 33.

The square root of 22280775 is about 4720.2515822782. The cubic root of 22280775 is about 281.3909318377.

Adding to 22280775 its reverse (57708222), we get a palindrome (79988997).

The spelling of 22280775 in words is "twenty-two million, two hundred eighty thousand, seven hundred seventy-five".