22281007 has 16 divisors (see below), whose sum is σ = 26099712. Its totient is φ = 18627840.

The previous prime is 22280989. The next prime is 22281023. The reversal of 22281007 is 70018222.

It is not a de Polignac number, because 22281007 - 2⁷ = 22280879 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22285007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62943 + ... + 63295.

It is an arithmetic number, because the mean of its divisors is an integer number (1631232).

Almost surely, 2^22281007 is an apocalyptic number.

22281007 is a deficient number, since it is larger than the sum of its proper divisors (3818705).

22281007 is a wasteful number, since it uses less digits than its factorization.

22281007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 558.

The product of its (nonzero) digits is 448, while the sum is 22.

The square root of 22281007 is about 4720.2761571756. The cubic root of 22281007 is about 281.3919085013.

Adding to 22281007 its reverse (70018222), we get a palindrome (92299229).

The spelling of 22281007 in words is "twenty-two million, two hundred eighty-one thousand, seven".