22388885 has 8 divisors (see below), whose sum is σ = 27593016. Its totient is φ = 17426880.

The previous prime is 22388879. The next prime is 22388917. The reversal of 22388885 is 58888322.

It can be written as a sum of positive squares in 4 ways, for example, as 1062961 + 21325924 = 1031^2 + 4618^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22388885 - 2⁸ = 22388629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 60326 + ... + 60695.

It is an arithmetic number, because the mean of its divisors is an integer number (3449127).

Almost surely, 2^22388885 is an apocalyptic number.

It is an amenable number.

22388885 is a deficient number, since it is larger than the sum of its proper divisors (5204131).

22388885 is a wasteful number, since it uses less digits than its factorization.

22388885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121063.

The product of its digits is 245760, while the sum is 44.

The square root of 22388885 is about 4731.6894445853. The cubic root of 22388885 is about 281.8453161367.

The spelling of 22388885 in words is "twenty-two million, three hundred eighty-eight thousand, eight hundred eighty-five".