22287287144 has 24 divisors (see below), whose sum is σ = 42948632790. Its totient is φ = 10842458688.

The previous prime is 22287287131. The next prime is 22287287171. The reversal of 22287287144 is 44178278222.

It can be written as a sum of positive squares in 3 ways, for example, as 18451962244 + 3835324900 = 135838^2 + 61930^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1006547 + ... + 1028450.

Almost surely, 2^22287287144 is an apocalyptic number.

It is an amenable number.

22287287144 is a deficient number, since it is larger than the sum of its proper divisors (20661345646).

22287287144 is a wasteful number, since it uses less digits than its factorization.

22287287144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2035077 (or 2035036 counting only the distinct ones).

The product of its digits is 802816, while the sum is 47.

The spelling of 22287287144 in words is "twenty-two billion, two hundred eighty-seven million, two hundred eighty-seven thousand, one hundred forty-four".