22117072 has 20 divisors (see below), whose sum is σ = 43765056. Its totient is φ = 10822880.

The previous prime is 22117057. The next prime is 22117079. The reversal of 22117072 is 27071122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22117079) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13954 + ... + 15457.

Almost surely, 2^22117072 is an apocalyptic number.

It is an amenable number.

22117072 is a deficient number, since it is larger than the sum of its proper divisors (21647984).

22117072 is a wasteful number, since it uses less digits than its factorization.

22117072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29466 (or 29460 counting only the distinct ones).

The product of its (nonzero) digits is 392, while the sum is 22.

The square root of 22117072 is about 4702.8791181573. The cubic root of 22117072 is about 280.7000848515.

Adding to 22117072 its reverse (27071122), we get a palindrome (49188194).

The spelling of 22117072 in words is "twenty-two million, one hundred seventeen thousand, seventy-two".