22145608 has 8 divisors (see below), whose sum is σ = 41523030. Its totient is φ = 11072800.

The previous prime is 22145593. The next prime is 22145609. The reversal of 22145608 is 80654122.

It can be written as a sum of positive squares in only one way, i.e., 21141604 + 1004004 = 4598^2 + 1002^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (22145609) 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 as a sum of consecutive naturals, namely, 1384093 + ... + 1384108.

Almost surely, 2^22145608 is an apocalyptic number.

It is an amenable number.

22145608 is a deficient number, since it is larger than the sum of its proper divisors (19377422).

22145608 is a wasteful number, since it uses less digits than its factorization.

22145608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2768207 (or 2768203 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 22145608 is about 4705.9120263770. The cubic root of 22145608 is about 280.8207550615.

The spelling of 22145608 in words is "twenty-two million, one hundred forty-five thousand, six hundred eight".