22431016 has 8 divisors (see below), whose sum is σ = 42058170. Its totient is φ = 11215504.

The previous prime is 22430987. The next prime is 22431047. The reversal of 22431016 is 61013422.

It can be written as a sum of positive squares in only one way, i.e., 20340100 + 2090916 = 4510^2 + 1446^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 22430984 and 22431002.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1401931 + ... + 1401946.

Almost surely, 2^22431016 is an apocalyptic number.

It is an amenable number.

22431016 is a deficient number, since it is larger than the sum of its proper divisors (19627154).

22431016 is a wasteful number, since it uses less digits than its factorization.

22431016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2803883 (or 2803879 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 22431016 is about 4736.1393560578. The cubic root of 22431016 is about 282.0219958364.

Adding to 22431016 its reverse (61013422), we get a palindrome (83444438).

The spelling of 22431016 in words is "twenty-two million, four hundred thirty-one thousand, sixteen".