22303945 has 8 divisors (see below), whose sum is σ = 26797320. Its totient is φ = 17821440.

The previous prime is 22303943. The next prime is 22303993. The reversal of 22303945 is 54930322.

It can be written as a sum of positive squares in 4 ways, for example, as 3433609 + 18870336 = 1853^2 + 4344^2 .

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

It is not a de Polignac number, because 22303945 - 2¹ = 22303943 is a prime.

It is a super-3 number, since 3×22303945³ (a number of 23 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (22303943) by changing a digit.

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, 2835 + ... + 7255.

It is an arithmetic number, because the mean of its divisors is an integer number (3349665).

Almost surely, 2^22303945 is an apocalyptic number.

It is an amenable number.

22303945 is a deficient number, since it is larger than the sum of its proper divisors (4493375).

22303945 is a wasteful number, since it uses less digits than its factorization.

22303945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5435.

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 22303945 is about 4722.7052628764. The cubic root of 22303945 is about 281.4884384577.

The spelling of 22303945 in words is "twenty-two million, three hundred three thousand, nine hundred forty-five".