22191248 has 10 divisors (see below), whose sum is σ = 42995574. Its totient is φ = 11095616.

The previous prime is 22191223. The next prime is 22191287. The reversal of 22191248 is 84219122.

It can be written as a sum of positive squares in only one way, i.e., 11641744 + 10549504 = 3412^2 + 3248^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 22191248.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 693461 + ... + 693492.

Almost surely, 2^22191248 is an apocalyptic number.

It is an amenable number.

22191248 is a deficient number, since it is larger than the sum of its proper divisors (20804326).

22191248 is a wasteful number, since it uses less digits than its factorization.

22191248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1386961 (or 1386955 counting only the distinct ones).

The product of its digits is 2304, while the sum is 29.

The square root of 22191248 is about 4710.7587499255. The cubic root of 22191248 is about 281.0135376768.

The spelling of 22191248 in words is "twenty-two million, one hundred ninety-one thousand, two hundred forty-eight".