22316872 has 8 divisors (see below), whose sum is σ = 41844150. Its totient is φ = 11158432.

The previous prime is 22316843. The next prime is 22316873. The reversal of 22316872 is 27861322.

It can be written as a sum of positive squares in only one way, i.e., 21846276 + 470596 = 4674^2 + 686^2 .

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

It is a super-3 number, since 3×22316872³ (a number of 23 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (22316873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1394797 + ... + 1394812.

Almost surely, 2^22316872 is an apocalyptic number.

It is an amenable number.

22316872 is a deficient number, since it is larger than the sum of its proper divisors (19527278).

22316872 is a wasteful number, since it uses less digits than its factorization.

22316872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2789615 (or 2789611 counting only the distinct ones).

The product of its digits is 8064, while the sum is 31.

The square root of 22316872 is about 4724.0736658100. The cubic root of 22316872 is about 281.5428099792.

The spelling of 22316872 in words is "twenty-two million, three hundred sixteen thousand, eight hundred seventy-two".